"We have evidence that he was a very quiet, reticent man," said Quarles. "They probably hardly saw him in the daytime, and at night he would have a painted face, and the fact that he was wearing the dress would go a long way to convince any one who chanced to see him in the dim light at the back of the stage that night." "And who do you suppose he was?" I asked. "We will go back to Watson and Miss Day," said Quarles. "Miss Day was silent on the question of love, fearful, I take it, that her natural repugnance to the man might serve to betray the conspiracy. I believe the conspiracy was formed on the spur of the moment, just before Watson came from behind the curtains that evening and asked whether you were a doctor. I should say the dead man had pestered her, and that she was relieved by his death. I find some confirmation of this in Watson's attitude. He talks of some of the best men having been in prison, in such a way, in fact, that his wife hastens to laugh at his hobby, afraid that he will betray himself. Now he could hardly have been referring to the dead man; he declared himself that he was not thinking of Henley; I suggest that he was thinking of himself." "And you accused me of jumping to a conclusion!" I exclaimed. "I haven't finished yet," answered the professor. "Here is my complete theory. The dead man knew something of Watson's past, and was holding that knowledge over him, blackmailing him, in fact, and I think the company knew it. At the same time he pesters Miss Day with his attentions, which Henley, more than half in love with Miss Day himself, resents and determines to rid the troupe of a blackguard. He begins by pretending some friendship for his victim, and after giving out that he is going to town, suggests to the dead man that his absence may be an opportunity for the other to get into Miss Day's good graces. Why should he not dress up and take his place on the following evening? I have little doubt that Henley expected him to come to try on the dress that night after the performance, which would account for his being such a long time changing. The victim did not come; by the look of him in death I should say he had not been sober, which would account for his not coming. Next morning Henley goes to find him, takes him to the tent, not through the door, which would be fastened probably in some way, but surreptitiously, through some weak spot in the pegging down very likely." "But why should he wait until the man had got into the pierrot's dress before murdering him?" said Zena.