ten o'clock
`` I am glad dad sent for the detective . I hope he catches them red-handed at something , and locks them up . '' `` They certainly ought to be locked up , '' was Dick 's comment . The boys studied hard that evening and by ten o'clock all were tired out and ready to go to bed . But , just as they were on the point of retiring , there came a knock on the door of the room occupied by Tom and Sam , and Stanley appeared . `` You are wanted in Room 14 ! '' said the student , in a loud whisper .