"Most instructive," Markham nodded his head appreciatively. "I am to assume, then, that you were infatuated with—or, let us say, amatorily attracted by—Miss Odell, and that on occasions you exhibited the intimate psychological corollary of jealousy?"
"You may assume what you please. But I fail to understand why my emotions are any of your affair."
"Had your emotions not led you to highly questionable and suspicious acts, I would not be interested in them. But I have it on unimpeachable authority that your emotions so reacted on your better judgment that you threatened to take Miss Odell's life and also your own. And, in view of the fact that the young woman has since been murdered, the law naturally—and reasonably—is curious."
The doctor's normally pale face seemed to turn yellow, and his long splay fingers tightened over the arms of his chair; but otherwise he sat immobile and rigidly dignified, his eyes fixed intently on the District Attorney.
"I trust," added Markham, "you will not augment my suspicions by any attempt at denial."
Vance was watching the man closely. Presently he leaned forward.
"I say, doctor, what method of extermination did you threaten Miss Odell with?"
Doctor Lindquist jerked round, thrusting his head toward Vance. He drew in a long rasping breath, and his whole frame became tense. Blood suffused his cheeks; and there was a twitching of the muscles about his mouth and throat. For a moment I was
