“And you played Pandora and took a peep—eh, what? Most natural,—I’d have done it myself.”
He stepped back, and bowed politely.
“That will be all, Mrs. Platz. . . . And you needn’t worry about the young lady. Nothing is going to happen to her.”
When she had left us, Markham leaned forward and shook his cigar at Vance.
“Why didn’t you tell me you had information about the case unknown to me?”
“My dear chap!” Vance lifted his eyebrows in protestation. “To what do you refer specifically?”
“How did you know this St. Clair woman had been here in the afternoon?”
“I didn’t; but I surmised it. There were cigarette butts of hers in the grate; and, as I knew she hadn’t been here on the night Benson was shot, I thought it rather likely she had been here earlier in the day. And since Benson didn’t arrive from his office until four, I whispered into my ear that she had called sometime between four and the hour of his departure for dinner. . . . An element’ry syllogism, what?”
“How did you know she wasn’t here that night?”
“The psychological aspects of the crime left me in no doubt. As I told you, no woman committed it,—my metaphysical hypotheses again; but never mind. . . . Furthermore, yesterday morning I stood on the spot where the murderer stood, and sighted with my eye along the line of fire, using Benson’s head and the mark on the wainscot as my points of coinc’dence. It was evident to me then, even without measurements, that the guilty person was rather tall.”