two o’clock
`` I should prefer to go quietly down to your garden , and turn the whole matter over in my head . There is something to be said for the theory of suicide which you have put forward . We must apologize for having intruded upon you , Professor Coram , and I promise that we wo n't disturb you until after lunch . At two o'clock we will come again , and report to you anything which may have happened in the interval . '' Holmes was curiously distrait , and we walked up and down the garden path for some time in silence . `` Have you a clue ? '' I asked , at last .