five o'clock
The girl had not lied , he was sure ; therefore they must have gained entrance from the outside ; and , possibly , were now hiding in the Chartrand apartment -- if the telephone message to No. 401 had to do with the occupant of the deserted cab and the lost letter . Yet how to connect things ? And why bother to connect them ? He did not care for the vanished lady of the cab -- he had the letter and the photograph ; and because of them he was to have a talk with an interesting young woman at five o'clock that afternoon . The cipher letter , which was the much desired quantity , was safely across the hall , waiting to be turned over to Carpenter , the expert of the State Department , for translation . Meanwhile , what concerned Harleston was the photograph of Madeline Spencer and her connection with the case -- and to know if the United States was concerned in the affair . At this point he turned over and calmly went to sleep .