eleven o'clock
`` There 's only one door to your chambers . We found it bolted from the inside . '' `` Yes , '' groaned West , pressing his hand to his forehead . `` I bolted it myself at eleven o'clock , when I came in . '' `` No human being could climb up or down to your windows . The plans of the aero-torpedo were inside a safe . '' `` I put them there myself , '' said West , `` on returning from the War Office , and I had occasion to consult them after I had come in and bolted the door .