restaurant in West Fortieth Street; secondly, that they quarrelled; and thirdly, that they departed at midnight, entering a taxicab together. . . . Now, the murder was committed at twelve-thirty; but since the lady lives on Riverside Drive, in the Eighties, Benson couldn't possibly have accompanied her home—which obviously he would have done had he not taken her to his own house—and returned by the time the shot was fired. But we have further proof pointing to her being at Benson's. My man learned, at the woman's apartment-house, that actually she did not get home until shortly after one. Moreover, she was without her gloves and hand-bag, and had to be let in to her rooms with a pass-key, because, as she explained, she had lost hers. As you remember, we found the key in her bag. And—to clinch the whole matter—the smoked cigarettes in the grate corresponded to the one you found in her case."
Markham paused to relight his cigar.
"So much for that particular evening," he resumed. "As soon as I learned the woman's identity this morning, I put two more men to work on her private life. Just as I was leaving the office this noon the men 'phoned in their reports. They had learned that the woman has a fiancé, a chap named Leacock, who was a captain in the army, and who would be likely to own just such a gun as Benson was killed with. Furthermore, this Captain Leacock lunched with the woman the day of the murder and also called on her at her apartment the morning after."
Markham leaned slightly forward, and his next
