midnight
Slowly the hours passed . There was not a single window or opening in the room , and the prisoners could not tell whether it was day or night outside . But now Hal , glancing at his watch , uttered an exclamation of surprise . `` Almost midnight , '' he said . `` Guess we might as well turn in . '' Hal and Chester tumbled into the beds , but Alexis continued to sit in his chair , brooding . `` Come on , Alexis , get to bed , '' Hal called .