five o'clock
`` Did he leave any message for me , other than the letter ? '' `` No , sir . `` At what hour did he leave the office ? '' `` I ca n't say , sir ; he was still here when I went away at five o'clock . He gave me a key to the office so that I could get in this morning . '' Kent remained silent , and he added , `` Is that all , sir ? '' `` Yes , thanks , '' and the clerk retired .