"_Primus_: Lady Duncan had an assignation with Count D'Evreux last night. She went up the stairway to his room. She was carrying with her a small pistol. She had had an affair with Edouard, and she had been rebuffed. She was furious. But she went to his room. "He was drunk when she arrived--in one of the nasty moods with which both of you are familiar. She pleaded with him to accept her again as his mistress. He refused. According to Lady Duncan, he said: 'I don't want you! You're not fit to be in the same room with _her_!' "The emphasis is Lady Duncan's, not my own. "Furious, she drew a gun--the little pistol which killed him." The Countess gasped. "But Mary _couldn't_ have--" "_Please!_" Lord Darcy slammed the palm of his hand on the arm of his chair with an explosive sound. "My lady, you _will_ listen to what I have to say!" He was taking a devil of a chance, he knew. The Countess was his hostess and had every right to exercise her prerogatives. But Lord Darcy was counting on the fact that she had been under Count D'Evreux's influence so long that it would take her a little time to realize that she no longer had to knuckle under to the will of a man who shouted at her. He was right. She became silent. Father Bright turned to her quickly and said: "Please, my daughter. Wait." "Your pardon, my lady," Lord Darcy continued smoothly. "I was about to explain to you why I know Lady Duncan could not have killed your brother. There is the matter of the dress. We are certain that the gown that was found in Edouard's closet was worn by the killer. _And that gown could not possibly have fit Lady Duncan!_ She's much too ... er ... hefty. "She has told me her story, and, for reasons I will give you later, I believe it. When she pointed the gun at your brother, she really had no intention of killing him. She had no intention of pulling the trigger. Your brother knew this. He lashed out and slapped the side of her head. She dropped the pistol and fell, sobbing, to the floor. He took her roughly by the arm and 'escorted' her down the stairway. He threw her out. "Lady Duncan, hysterical, ran to her husband. "And then, when he had succeeded in calming her down a bit, she realized the position she was in. She knew that Laird Duncan was a violent, a warped man--very similar to Edouard, Count D'Evreux. She dared not tell him the truth, but she had to tell him something. So she lied. "She told him that Edouard had asked her up in order to tell her something of importance; that that 'something of importance' concerned Laird Duncan's safety; that the Count told her that he knew of Laird Duncan's dabbling in black magic; that he threatened to inform Church authorities on Laird Duncan unless she submitted to his desires; that she had struggled with him and ran away."