midnight
You will be in at ten o'clock . Do you hear ? '' `` Yes , sir , '' said Sam ; and added with sudden awakening of interest , `` if you would let me have a key , father , I -- '' `` I will not let you have a key ! I will have no boy entering my house at midnight with a key ! Do you understand ? '' `` Yes , sir , '' Sam murmured falling back into his own thoughts . Mr. Wright , still talking , stood at the foot of the stairs so that his son could not pass him .