Hey everybody, this is Brian. I finished a very long project and I posted it on Facebook and I had some feedback asking for Hey, can you kind of explain this in depth? so Basically what this is is I wanted to do a like home security system But I wanted motion detectors. So I took these little cheap Adjustable PRI motion sensors. You can see like $2.62 and the graphics and not the best, but you can see it's very small Here's the actual whoops Here's the actual sensor Calling it a motion sensor is kind of not accurate. It actually detects variance in heat and that's how it detects motion They are dirt cheap and they are almost impossible to defeat I've tried several different ways to defeat these things from Aiming a laser at it to making sure that I was exactly like a room temperature, but now it picks up any little variance Along with being very cheap, they're very simple. You see little orange things allow you to just I think it's like the Horizontal and vertical scanning That might not actually be accurate, but and it's just got three little pens It's got a positive negative and then a little I don't remember what it's called It's like a voltage. It just tells you hey, there was motion. So whenever there's motion, it'll actually put out voltage on that pen And you can buy them in bulk. They're pretty pretty simple little devices with that I hooked it to what's called a particle photon and let me whoops Here's the actual Detector that I built that is the back side of the motion detector You see there's little orange knobbies that you can adjust and there's the wires the positive and negative and then here is the It's not a data line, but it's just like a voltage line. So in motion it sends Voltage down here and this will just pick it up Now it's a little silver guy in the center. That's actually a Wi-Fi chip set So really what I've done is I put a motion detector on my wireless network So when this thing detects motion, it'll go out to a Raspberry Pi Whoops, this is the actual front side of that detector that I built. See there's the motion Detector and I built like I think like six or nine of them something like that. They're scattered throughout the house And there it is plugged in. It's just a little micro USB plugs right into the wall And yeah, here it is. It goes to this Raspberry Pi Now why did I use a Raspberry Pi simple? I had it here. I had it laying around the house I've had it for a few years. I got it as like a Christmas preglet So I put it to 80802.1. I think B wireless USB adapter and it just you know fired right up now these sensors whoops Do an HTTP get so when this sees motion it does a web request over to the Raspberry Pi Which has a full lamp stack on here. It's running a Linux Apache What am I using yeah, yee 2.0 is the PHP framework that I actually used And then you know it stores everything in the database. So Basically gets motion it goes to here. This little guy says is Brian home? Yes or no And if the answer is no then it sends me a text message it contacts 9-1-1 and it does a few other snazzy things So to determine whether or not I was home.  It's not really true They constantly detect motion whether they're off or on it just flips a bit in the my sequel database and the raspberry Raspberry Pi checks that to see you know the status is it off is it on etc. Etc. So if it's off it just ignores all motion if it's on however it registers all motion and Says hey, there was motion and then it sends out through an email gateway I think AT&T and Verizon both have them, but it's like Texted ATT or something like that But basically just has my phone number or 9-1-1 and then a basic message and it just sends it out It'll AT&T automatically converts it into a text message and shoots it out for me And then I have awake and asleep. These are Take a little bit of explaining The Android application runs as a background service, and I'll actually show the code here in a minute But once a minute it'll do and HTTP get back to this Raspberry Pi this guy and say hey I'm home.  It's the same thing as on but there's special flags on some of the detectors And let me go in here Here's the actual web interface, and this is actually right off the Raspberry Pi So here's the detectors You can see how bedroom has enabled asleep as no while the others have it is yes Because when I'm laying in bed If I roll over in the middle of the night I don't want the motion that was just detected to register and sound the alarm because that Android application will actually Sound a very loud alarm to wake me up So my phone's laying right next to me at night. It detects motion and say the living room Well, guess what? I'm not in the living room. I'm in bed sleeping So it's gonna, you know make a very loud alarm sound contact 9-1-1 and do all this stuff so before I've even Before I've even rolled out of bed and wipe the sleep out of my eyes 9-1-1's already been contacted I'm not ultra paranoid. It just it was a project that I really wanted to do and You can enable or disable so if I have guests I can say you know guest room disable that so when there's motion in there It's not gonna wake me up to This was tricky for a few reasons Hey, I'm not a hardware guy at all. I mean I've built my own gaming computers and I've fixed laptops and you know Half a million dollar servers and networks and things like that But I've never actually just grabbed a bunch of hardware and started plugging it all together and wiring it up and writing the firmware for it So I had to get a bunch of these little sensors.  I think all and all these are about 30 bucks each to build because these little Enclosures were a little expensive the particle phonons themselves are about 19 bucks each The PRI sensors like three bucks, but I got most of this for free because I had the Raspberry Pi as a Christmas present I had the particle phonons as Christmas presents on a different Christmas. So all this stuff was just You know laying around the house collecting dust and I wanted to do something with it Also I use particle photons because the documentation is just amazing on these and it comes with a cloud-based system When you set these up Yeah, let me scroll up here. Here's the actual photon right here When you set these bad boys up, it's very simple. You plug it into your computer or into an electrical outlet or whatever and You hook it to your Wi-Fi and you use an Android or an iPhone application to do that So it automatically just talks to it and it's literally just a screen comes up and says hey We found your device and then you just plug in your Wi-Fi credentials and it puts it on the Wi-Fi and then you can flash it So because this is cloud-based, I can be in a hotel room 3,000 miles away and I can update my security system from the hotel room using the hotel Wi-Fi and just flash these things remotely So if I'm you know gone and I start getting a lot of squirrely activity because these don't register motion. They register heat I had one of these under a Heating vent from the furnace and it kept registering whenever the furnace came on I can actually tweak that firmware remotely Also the documentation on these is just amazing It's just blew me away the amount of documentation they have on these And they walk you through a lot of things and they have a cellular version too So if you don't want to just do Wi-Fi, you can do it right off of cellular and there's a small monthly charge for the cellular I think it's like 2g and 3g speeds, but You can put the sucker out in the middle of nowhere and as long as you've got a cellular signal it works One of them did screw up for me And I had to go into the Linux command line and over serial give it the Wi-Fi credentials instead of through the android app And it was a known bug in these things But so far they've been not bad The other thing I like is they have an online IDE and here's the actual code for those Particle photons. There's really no point in screenshotting this. There's not a whole lot to the code They just simply they have a startup routine or setup Which is where you register all your pinouts and you know serial begin and things So i'm just changing some led colors and getting the mac address And setting the pin modes on these things. So I have like the board and the sensor So I have an led that blinks and then I have that sensor where I do an input to see when there's motion And then the only other real magic is i'm getting the mac address off of the Wi-Fi chipset on the board Which I use that for the HTTP get and then the get itself. I actually use one of their built-in libraries They come with just tons and tons and tons of libraries Pretty much anything you can imagine that somebody's already written the code for it So you can see right at the very top. I'm including their HTTP client The client's a little buggy I had to fight with it a couple times and I had to tweak the code on the back end But you can see here is the code right here where I'm just doing an HTTP get I'm going over to the raspberry pi Which I might network it's a 1.1 21 And then here's the actual query string If you remember e2 at all is your xml controller and the motion action and then I've got some parameters So I'm just saying version one and then the mac address. It's very simple. I'm just doing an HTTP get When that happens It does some magic in the background here and it says is brian home Is the system on or off or is it a wake or sleep? And then it just you know through the code determines what it needs to happen So when motion's detected if I'm gone or I'm asleep or whatever It'll text my phone through the at and t and verizon gateways Um, and then it'll text 911 and say hey motion was detected at and it'll give the address and then my cell phone number Um, so the cell phones, you know sitting next to me and motion is detected before I even roll over boom 911's already been contacted Um If I wanted to rebuild this thing, I'd probably do it with this little guy called chip Um, each one of these it's nine dollar board But each one of these is full embedded linux for nine bucks And the specs on these are just insane. It's built-in wi-fi. So this little board already has wi-fi Um, a one gigahertz processor four gigs of internal Storage 512 ram bluetooth 4 and works on any display So essentially you have you know this little guy With just a motion detector plopped right on top of it And then maybe a small enclosure and plug it straight into the wall So this thing's probably the size of a credit card Um, yeah, and you got a full-blown linux computer running specs that are better than what I had 15 years ago um We'll see what else uh, I did a full-blown android application and here's the application I did a couple different uh interfaces for the end user, but I basically settled on this Um, I can run it in the emulator, but it won't work in the emulator because the emulator doesn't do wi-fi But this had some some issues Uh, you can see how it's a service I had to run a background service because if you know anything about android if you go like that But your application is dead. It just died So it runs in a background service Of course on the emulator. It killed it, but uh Runs in the background service. So even if it's not in the foreground it's running and it's constantly pinging away at this thing um The big problem I had with that was just I'm not a java guy. I haven't really ever worked with java and Android's not really java java. It's like google's version of java So I had to learn, you know, basic android sdk and I had to learn how to do that And then I'm doing some advanced things like I'm starting a service And then bringing the service to the foreground and then, you know, registering it with the white list because android has this feature called Doze So if you're not using your phone it puts your phone into what's called dose or low power mode So it starts killing services that it thinks are not, you know, uh Not a priority So like if you have pandora on your phone and you set your phone down walk away for 20 minutes pandora It's probably not going to be running when you come back um So what was happening is I would set this thing up at night and then in the morning I'd walk around to test and I was getting no messages And that's because over the night android killed the service because it didn't see it as a priority service So I had to figure out how to how to do that. Um Here's the actual service itself And it plays some music and stuff like that. I shouldn't say music sounds And it'll detect when the wi-fi is connected and disconnected So when I walk out of my apartment and the wi-fi drops it stops the timer in the background So it's not chewing up my battery and then when I come home It sees the wi-fi is reconnected and it starts the timer again And then it says hey brian's home and sends that to the To the raspberry pi This guy So that knows i'm home So before my keys even entered in the lock for me to walk into the apartment It already knows that i'm home and it won't detect, you know motion because i'm home And 911 won't get called and all that Still a couple bugs in it, but for the most part it's working um The other main pickups that I really had was uh Just getting used to android itself and Originally I had everything in an activity until I learned about services and then when I moved to the service I had to do things a little differently Um, I am actually going to do If I can find my notes Full-blown android tutorial series because I've learned quite a bit about android So I've actually been spending the morning just typing up like a basic Lesson plan of what we're going to start doing here. Um, I do want to go get back to cute I love c++ and cute, but this is Kind of a neat project. I may like I said redo this whole thing on uh, What's it called chip this little guy? um The code would probably be in python instead of c++ though Unless I get really adventurous and want to do it all in c++ with cute that might actually be what I do So that's it


Murder by Experts. A virtual broadcasting system presents Murder by Experts. With your host and narrator, the noted mystery writer, Brett Halliday. Mr. Halliday is creator of the world-famous detective character, Michael Shane. Author of 25 mystery novels, and whose latest work, This Is It, Michael Shane, has just been blubbered. This is Brett Halliday. Each week at this time, Murder by Experts brings you a story of crime and mystery, which has been chosen for your approval by one of the world's leading detective story writers. This time, our guest expert is the noted mystery novelist, Lenore Glenn Offert. From her wide knowledge of the field of mystery, Ms. Offert has chosen a tense and dramatic tale of a man who found himself amashed in a web of jealousy and violence. With an ending he didn't foresee, as written by George and Gertrude Fass. And now we present John Sylvester and Joyce Gordon in Freeze a Crowd.  My arms fell as if they'd been unhinged at the joints by the time I'd walked a mile from the main road to the hedge hop in. It was a long, low, white building, sitting back about a hundred feet from the road. This was it. The roadhouse where I would spend the next three months pounding the ivories. At this hour of the morning, the entrance hall was empty. And so was the dining room. I walked straight through and pushed open a swinging door that looked as if it might lead into the kitchen. It did. Well, I'll find Mr. Hedges. You'll be around. You the new piano player? That's right. Thick stars to name. Gus Peters, I'm a cook. Glad to know you, Gus. Rest your weary limbs. Thanks. He didn't meet you at the bus stop, huh? Nope. Yeah, he wouldn't. More important things to tend to. How about a cold beer? You look as if you need it. No beer, thanks. I'll have a glass of milk, if it's handy, and a sandwich. Milk. You sure you're the new piano player? I said I was. So Hedges had more important things to do than to meet me, huh? His wife keeps him on a jump. His wife? Yeah. Doesn't let her out of his sight. She went to town to do the marketing this morning. Me followed her most likely. Why would he want to do that? Don't trust her, that's why. Jealous. You want some free advice, son? Yeah, okay. Stay away from her. Far away. I don't want to be hard. No. Well, maybe you'll change your mind when you see her. Why do you suppose we've been having such a fast turnover on piano players? None of them last more than a week. Ah, listen, Gus, I see plenty of gorgeous girls in my line of work. They don't bother me. Yeah, well, every Napoleon's got his water loose on. Only two men around here ain't ever been bothered by Alice Hedges. Me, for one, I'm fast that kind of foolishness. And the other? Andy Slade. Who's he? You made him your works here. How does he manage to resist? You know, I ain't never figured that one out. Except he's just a natural, cold fish. Any review of stuff on the porch, Dick? Uh-huh. Well, I'll take it to your room. You're in the attic right next to me. Oh, swell, but never mind lugging up that stuff. Oh, sure, I'd sell them going up anyway. You just sit here and finish. Gus went out and left me along with my sandwich and milk. A couple of minutes later, I found out what he'd been driving at. The door from the dining room swung open and a girl came in carrying some packages. She walked over to the table and put them down before she said anything. And I had time to get a good look at what was probably the most beautiful woman I'd ever seen. Hello.  Yes, I am. I'm Alice Hedges. How do you do? Hello. I hope Gus is making you comfortable. My husband didn't meet your bus, did he? No, I walked. I'm awfully sorry. If I'd known, I... Oh, John, here's Mr. Starr, the new pianist. Mr. Starr, my husband. How are you, Mr. Hedges? Hello, Starr. Alice, go remind Andy to meet me in my office in 15 minutes. Oh, but John, I'm sure he'll be more... Go on, Alice. Listen to me, Starr. You're new here. Yes.  Stay away from my wife. You can relax, Mr. Hedges. I'm here to play the piano.  Oh, now, don't give me that, Starr. I've reached the end of my rope with her. The next man she makes a play for is gonna get it. The next man she... You heard me. That's why I'm warning you. Now, if you want to stay healthy, keep clear of her. That said... Enough said. Okay. Now, let's talk about your work. Yes, Mr. Hedges. You play in the dining room from dinner time until 2 a.m. You could take a 10-minute break every hour. Uh-huh. And there won't be a lot of customers in the dining room. Sometimes there may not be any. But you'll play anyway. Oh, that's okay with me. Maybe you'd better get this straight from the stock. I don't make my money out of the dining room. Or the bar either. No? No. I've got the barn fixed up with a dice table and a roulette wheel. Oh. Andy Slade runs that end of it. Now, it's not going to affect you one way or another. Oh, I'm not worried, Mr. Hedges. I've played in other clubs where they had gambling rooms. Good. We'll get along, Dick. Just remember, stick to your piano playing. I intended to. If Hedges wanted to go around thinking his wife was a man chaser, that was his business. Of course he was wrong. All you had to do was look at Alice Hedges to know that she was straight. She'd never come chasing after me. And even if she did, she wouldn't find anyone at home. No, sir. Jobs don't grow on bushes. And I was hanging on to this one. At dinner, I played for two or three couples. And at about 10, the gambling crowd began drifting in. They'd have one drink at the bar and then head out toward the rear where the barn was. I went to have a look during one of my 10-minute breaks. That's when I met Andy Slade. He was tall and good-looking in a pasty way and handled the roulette wheel with an easy air. He grinned when Hedges introduced us. But I felt sure he wouldn't know me again the next time we met. So this was Andy Slade, the only man outside of Old Gus that Hedges could trust. At two in the morning, I quit and went into the kitchen for a glass of milk. Alice was there alone. Hello, Dick. Did you want something? No, thanks. I guess I'll be going up to bed. But you must have come in for something. A glass of milk? Don't be bashful. Well, all right. Thanks a lot.  Told me what? That I'm no good. He did, didn't he? Oh, he... nothing like that. No use, Dick. He tells everybody. Well, he might have said something, but I just let it blow over my head. What do you think, Dick? About me, I mean. From what you've seen of me. Do I look like that kind? Well, certainly not.  A very nice girl. You really mean that? I know you do. You can't imagine how much it means to me to hear you say that.  Makes me so miserable. Always spying on me, always following me. Oh, gosh, that's a shame. Dick, see that lake out there? Yes? It's big and blue and deep. Someday that's where I'm going. That's one place he won't follow. Oh, don't talk like that, Mrs. Hedges. That's no way to solve anything. Would it really matter to anyone? What? Sure. It wouldn't matter to John. He doesn't love me really. Jealousy is just sort of a disease. I haven't anyone else. It wouldn't matter to me, Mrs. Hedges. You? Yes, it would, even though I never laid eyes on you before this morning. I know what you must be feeling, and I'm sorry for you. You're kind, Dick. You really understand, don't you? Oh, Dick, I need someone to understand me, to help me. Gee, I'll be glad to do anything I can on you. I know there's nothing you can do, but I'll be able to talk to you, and that'll mean so much to me. It will. I need a friend, Dick. I'm glad I found a friend. I went up to my room, but I didn't sleep. I kept thinking about Alice. What a tough spot she was in. I'm feeling sorry for her, and wondering what I could do to help. But five hours of torsing didn't help solve her problem any. I got up, washed, shaved, and dressed, and started down for breakfast.  It was from Alice, asking me to take the rowboat after breakfast and row a mile down the lake. I put it into my pocket and went downstairs to the kitchen for breakfast. Maybe you better go back to bed, son. I asked you twice if you wanted eggs, and I ain't got an answer yet. Ah, sorry, Gus. No eggs, thanks. Just some coffee. What? No milk? Where's Mr. Hedges, Gus? Sleeping. He never gets to bed before five. And Mrs. Hedges? Out marketing. Why? Oh, nothing, just that.  So what? I never was interested in another man's wife. She's no exception. Fine, that's fine, son. Uh... Is there a rowboat around, Gus? Yeah, it should be one tied up to the dock. Can you use it? Might as well. Nothing else to do. Well, piano players are all the same. Nothing else to do, you go rowing. Seems to me it's just back-breaking work in the heart and the hands. Well, I like to keep fit. Are the oars in the boat? Yeah. Say, Dick, maybe you'd better chop some wood for exercise. I could use some kinder. No, thanks. Listen, Rowling. The stiff breeze in my bag made the going tough. And even though the morning was cool, I'd worked up a good sweat before I'd been out ten minutes. Maybe I'd have done better to have stayed home and chopped kindling for old Gus. But she needed a friend. I couldn't let it down. Finally, I saw a patch of pink moving a little way up the bank. I rode to shore and tied up. Hello. I was beginning to be afraid you weren't coming. Weren't coming? Or with friends, aren't we? I know, Dick. I know. I just thought perhaps John saw you as you were leaving. Well, even if he did, there's nothing wrong with going out for a little row. He'd see something wrong in it. He saw something wrong and you're coming into the kitchen last night. He knew about that? But he was in the barn. He knew. He always knew. He was furious. But why? It was a coincidence that I met you there. It wasn't as if we'd planned to meet. Of course. That's what I told him. But he wouldn't believe me.  You're right, Alice. That kind of jealousy isn't normal. It must be terrible for you. It is. It is, but... I didn't ask you to come here just to cry on your shoulder. I wanted to warn you. Dick, you need this job, don't you? Yes, I do kind of. That's what I thought. Then you must go out of your way to avoid me. Don't even talk to me. Just ignore me as if I didn't exist. I hate to do that, Alice. You said you needed a friend, someone to talk to. That's all right, Dick. I guess I'll get used to this kind of life. Promise me you'll do as I say. It's the only way to keep your job. You really it is. Is that the way Slade keeps his job? Slade. He doesn't have to pretend indifferent. We took a dislike to each other the moment we met. John noticed it right away and decided to keep him no matter what his demands were. I see. Slade makes more than we do out of the roulette table. But he hates me. And that entitles him to anything he wants as far as John's concerned.  Dick, please. Please try to make him think you do. I'll help you. I'll avoid you too. And go on living in solitary confinement? But look, this is America, Alice. This is the 20th century. That man has no right to keep you a prisoner in your own house.  I think it's no use. There's nothing I can do. There sure is. You can leave him. I can't leave him. He'd follow me.  Oh, Dick, I'm lost. I'm lost. You've been sitting side by side on a log. Now Alice covered her face with a hat. I put my arm around her.  Oh, Dick. Dick. Sorry, Alice. I'll get you out of this. I'll think of a way. Don't worry, baby. Alice driving the car got back to the inn sooner than I did in the rowboat. Gus winked at me when I walked into the kitchen and nodded toward the dining room. Through the closed door, I heard their voices.  You couldn't have spent two hours in town shopping, no matter how crowded it was. Who'd you see when you got there? What man were you sweet talking to this time? I swear I didn't talk to any man in town, John.  I'll show you. I'll break his neck.  You know I ain't altogether wrong, don't you? He is wrong. He's a lunatic. That's what he is. Well, maybe he is and maybe he ain't. She's his wife and you've got no call button in your... I'll put in, all right. In my own time and in my own way. I didn't see her here for Malice again that day. I knew it wasn't because she wanted to avoid me. She was doing it for my sake to keep me out of hot water. But the next morning I felt I had to see her. And I had a hunch she wouldn't be too hard to find. After breakfast, I went down to the boat dock. The boat was there, but the oars were missing. I went back to the kitchen and asked Gus where they were. Oh, the oars, eh? That's the funny thing about them. I happened to notice that they had something wrong with them. I figured if you use them again, you might get hurt. So I just put them where they won't cause no trouble. Well, stop being smart, Gus. Let's have them. Look, what's the sense of getting blisters on your hands? You stay close to home, son. You'll be better off. I'm not worried about a few blisters. Well, then let me tell you something. Hedges took the other car and followed his wife this morning. You don't want them always, Dick? I walked out on him and let the porch door slam behind me. I'd wanted to tell Alice about the idea that had come to me at about three that morning. It was so simple I couldn't understand why it hadn't popped into my head the minute I was sure that Alice had to be rid of that man. Gambling was illegal. If Hedges was in jail, he couldn't bother Alice, could he? I went out to the public phone booth in the bar and called the police and told them about the gambling going on in the barn over at Hedge Hop Inn. As simple as that. I was feeling pretty good that night, playing to an empty dining hall and thinking how pretty soon Alice's troubles would all be behind her, with that precious husband of hers safe behind bars. Along about eleven o'clock the door from the entrance hall opened and Alice came in in the fluffy blue evening gown. She walked quickly through the room without stopping. But as she passed by my piano on her way to the kitchen, she managed to whisper, On the boat dock, Dick, at twelve. I kept on playing as if nothing had happened. But inside me a voice kept singing. She loves you, Dick. She tried to keep away, but she couldn't. She loves you. She'd never risk a rendezvous on the boat dock if she didn't. She loves you, just as you have her. At five to twelve I was on the dock. It was a night right out of a dream, with the mist over the lake and the moon a pale blur in the starless sky. I was looking out over the inky water when I heard the click of her high heels behind me. And I turned, and she was in my arms and her mouth was pressed hard against mine. It was a long time before either of us could speak. I know how you feel about me, Dick, darling. I know because it happened to me too. The moment I saw you, I was so afraid you'd believe the things John said and turn against me. I couldn't, I couldn't, sweet. I couldn't believe anything bad about you. Listen, honey, you're going to be free. Do you hear? You're going to be free. What do you mean, Dick? How? Never mind. You'll find out soon enough. Just trust me. Oh, I do, I do, Dick. You're so wonderful. Dick, someone's coming. I'll let him come. Right over here, Hedges. I'm waiting.  You know better than the rest of those pianos playing Casanova. Take it easy, Hedges. Dick, be careful.  That's why I warned you. You look better than the rest of them. Look out, Dick. I saw his roundhouse even before Alice screamed, and I beat him to the punch. I'll get you, I will. Dick, he had a knife. He was crouching, and there was a wicked seven-inch blade in his right hand. I circled him till I got the lights in my house at my back, and then I backed away. I couldn't fight a knife with my bare fist, and I was going to run for it as soon as I could get Alice away. House, get into the house. Lock yourself in and call the police. You'll be fish bait before they get here, and so will she. I felt something heavy being pressed into my hands. Use it, Dick. Use it quick. Hedges jumped, and I swung at the same minute. I must have crushed his skull in, because he fell like a sack of flour. In the darkness, I saw Alice bending over him. She stood up slowly. He's dead.  He's dead. Don't worry, darling. It'll be all right. I know it, Dick, but the police doesn't get murdered. What do we do? Do? I will. We'll get the police ourselves and tell them just how it happened. That's what we'll do. No, no, no. They won't believe you. We need time, Dick. Time to think. No, that's not good, Alice. If we try to cover up... For my sake. Once the police get here, you're lost. They'll never believe us. What's your idea? Hide him. Get him out of sight. Then we can make up the story. Hide him? Where? In his car. It's parked at the end of the dock. Okay. The luggage compartment. Listen, I think I hear someone. We stood and listened. But there wasn't a sound except the crickets. Shrilling so loudly, the noise seemed to beat inside my brain. So we dragged Hedge's body off the dock and I carried it to the car. Luckily, there wasn't any blood. I pushed it into the luggage compartment and closed the lid. It would be safe there until I could think of something to do with it. Then we separated. I went back to my piano while Alice gave the people gambling in the barn some story about Hedge's suddenly getting sick. So, that's what it was like to kill a man. But I wasn't guilty. I wasn't guilty of anything except the natural instinct for self-preservation. No jury would convict a man for trying to save his own life. Then why did I hide the body? I shouldn't have listened to Alice. She was a girl. She didn't understand these things. It was a mistake, a terrible mistake. And then I heard it. Mistake police. I jumped up from my piano and started for the barn. And then I remembered they weren't coming for me. They were coming to investigate that tip I'd given them about the gambling. So I stayed where I was in the dining room listening to the racket and commotion as the troopers closed in on the barn. Two minutes went by. And then a police sergeant came in leading Alice by the arm. No use, Mr. Hedge's. They know your husband's on the grounds and we're going to find him. We might as well tell us where he is. I don't know where he is. He must have gotten away. Nobody got away. We've got this place surrounded. Two of my men are looking through the house now. We'll find him if we have to tear the place apart. Who's this? Dick Starr. He plays the piano here. Well, sergeant, would it be all right if I left? I had nothing to do with the gambling. We're taking everybody in, bud. Uh, sergeant, could I talk to you alone for a minute? Sit down over there, Mrs. Hedge's. All right, what is it, Starr? Listen, I'm the one who tipped you off about the gambling here. I phoned headquarters this morning. You're not going to pull me in, are you? You tell that to the captain when we get to headquarters.  My orders are to take everyone and that's just what I'm going to do. I'll be reasonable, sergeant. Sorry. That's how it is. In that case... He's unconscious. Yeah. I've got to get out of here. I've got to get that car away. Do you think he can? I'll have to or we'll be facing a charge of murder. I'll be back as soon as I've managed it. I slipped out and keeping to the shadows made my way to the car. And then they saw me. I got out on the road and stepped on the gas. Behind me I heard the roar of motorcycles as some of the troopers came after me. I kept my lights off hoping to lose them in the dark when I hit the highway. But if they couldn't see me, I couldn't see anything at all. The blackout side came rushing at me. And suddenly the ground fell away. The last thing I heard was a crash of glass. Hiya, son. Well, doc, son. You're in the hospital and there's a cop just outside the door. You've been out for two days with a skin full of broken bones. Now just listen carefully. I might get another chance to say this. I'm listening. Hedges. They found his body in the car. Oh. They did? You know, I saw you stowed into the luggage compartment, son. Funny thing, though. That ain't where they found it. What do you mean? You see, there weren't no petition between the luggage compartment and the back seat. And it seems that the crash threw you out through the windshield and him right up into the front seat across the steering wheel. Needless trick of the year, I don't mind saying. What? Yeah, that's right. Some fluke, eh? The cops put the cause of Hedges' death down as an auto accident. They don't even have a reckless driving charge against you, son. Only trying to escape arrest. Practically in the clear. In the clear? Yeah. That's why I've been sitting here for two days, waiting for you to come too. Couldn't let you spill the beans. Oh, that's great. That's wonderful. What about Alice?  Well, I... I hate to tell you this, but you better forget about her. What do you mean? What do you mean forget about her? We're in love. Yeah, maybe you are. She ain't. She framed that fight with Hedges.  She knew he was following her when she went down to the dock to meet you. She knew he'd pull a knife and she had the club handy for you to use. She'd come out on top, no matter which one of you won. Where is she?  If you killed him, that was okay with her. If he killed you, that wouldn't have bothered her none. She'd have had a fry for her murder. Either way, she was rid of him. Where is she? All right. All right, if you insist. She went away to get married. Yeah? What? To Andy Slade. Slade? I always figured him for a cold fish. I was wrong. It was just an act. An act? Yeah. She set you and them other piano players up as decoys for Hedges. But all the time, it was Slade she was after. And so the curtain falls on threes a crowd, which was chosen by guest expert Lenore Glenn Offord. Miss Offord is author of the recently republished mystery novel, The Smiling Tiger. Next week at this time, Murder by Experts brings you a story of three killers and a victim who refused to die, as selected for your approval by one of the world's foremost detective story writers. Until then, this is your host, Brett Halliday, hoping you'll be with us again next week at this time. Program was transcribed.