"Oh, that was easy. Remember the masks. Jadby had only to assume a mask and domino, and could slip in easily. But this dress----" "I didn't wear it," interrupted Haken quickly; "woman's disguise is the last thing I should think of assuming, with my figure and face, to say nothing of my age. It's my opinion----" He paused. "Well, well?" questioned Prelice impatiently. "That Madame Marie wore the dress herself." "But how could she come to the ball? Constance never invited her." "You answered that question yourself a few minutes ago with reference to Jadby. Madame Marie could easily have slipped on a mask and domino, and have come to the ball to meet Jadby. Probably she wore that dress to implicate Constance, and concealed it in Rover's dressing-room to bring him into the matter. Remember, Madame Marie herself told you where the sham dress was to be found." "Yes!" assented Lord Prelice thoughtfully; "but how did Madame Marie learn what kind of a costume Constance would wear?" "Rover told her. Yes! he came to me about Constance's love for Shepworth, and told me that in his efforts to gain his wife's love he had gone to see if Madame Marie could give him a philter of sorts. Infernally silly to act in that way now-a-days. Madame Marie told him to learn the exact costume which Constance would wear at the ball--you see, Constance was keeping her style of dress a secret even from her husband--so that Rover could watch if she went down to see Shepworth. Rover learned about the dress from Constance's dressmaker, and told me, and also told Madame Marie. It was easy then for Madame Marie to get the frock imitated and slip down to Shepworth's flat. By doing that she managed to kill Agstone, to implicate young Shepworth, and to throw the blame on Constance. A confoundedly clever woman is Marie Eppingrave," ended Haken, chuckling. Lord Prelice rose thoughtfully. "The further we go into this case the more complicated does it become," he remarked. "Certainly Agstone, knowing Madame Marie, would bring her into the room; while not knowing Constance, he would not. Then again, Madame Marie knew about the herb, and Constance did not. It would seem----" He stopped, and walked abruptly to the door. "I must sleep on this," he said wearily. "But you know that I am innocent now that I have explained," said the old man, following, and speaking anxiously. He liked Prelice, and did not wish him to have a bad opinion of his uncle by marriage. Prelice grasped Haken's hand. "I believed in your innocence before you gave the explanation," he replied. "Wish my aunt good-night for me, Uncle Simon. I am going home to think over things." "Your aunt will be annoyed." "Not so much as I will be, if I listen to her scolding. Good-night."