midnight
Strange that O'Moy should never have mentioned that , '' he muttered , and then inquired suddenly : `` Where was Tremayne arrested ? '' `` Here , '' she informed him . `` Here ? He was here , then , at midnight ? What was he doing here ? '' `` I do n't know . But whatever he was doing , can your lordship believe that he would have come here to fight a secret duel ? ''