midnight
Their gossip indicates that they believe you had a very serious affair on with her , and this , together with the claim of the surgeons that you botched the operation on the child 's leg , furnishes a fairly powerful motive for the crime , at least in the public mind . Jack , '' he asked , with a mixture of doubt and anxiety , `` did you really have an affair with her ? '' `` Nonsense , Frank , nonsense , '' answered his brother . `` It is true that I went there at rather unusual hours ; I was pretty busy , and when I found she was in the habit of sitting up until after midnight I used to drop in there when I was through for the day . I do n't think I ever went there later than nine-thirty or ten , and I seldom stayed more than fifteen or twenty minutes . Later on I was , and I still am , greatly worried about the child . Of course my operation did n't produce tuberculosis ; that is silly , but it serves the purposes of jealous rivals .