About seven o'clock
`` During that time you have held the position of valet ? '' `` Yes , sir . '' `` At what time this morning did you discover what had occurred ? '' `` About seven o'clock , sir . '' `` You may state how you came to make this discovery , giving full particulars . '' `` I had gone as usual to the bath-room to prepare the bath for Mr. Mainwaring , and when everything was in readiness I knocked at his door to waken him . There was no answer , and , after knocking several times , I unlocked the door and looked in .