quarter past twelve
`` I took good care to let the native waiters here know that I had the clues I had found secreted in my room . I also let it be known that I was a heavy sleeper . `` My interpreter , who is by no means as treacherous a chap as his looks would indicate , heard the robbery of my room planned . He heard the hour fixed-a quarter past twelve . So all the rest was easy . '' `` Oh , yes , easy , but how did you do it ? '' `` Frank , Jack and Jimmie helped , '' added Ned .