“Ah, well,” sighed Vance, “a little futile recreation will do us no harm.”

“But why do you include Spotswoode?”

“Really, y’ know, I haven’t the slightest notion—except, of course, that he’s one of my quartet. And we’ll need an extra hand.”

“Well, don’t tell me afterwards that I’m to lock him up for murder. I’d have to draw the line. Strange as it may seem to your layman’s mind, I wouldn’t care to prosecute a man, knowing that it was physically impossible for him to have committed the crime.”

“As to that,” drawled Vance, “the only obstacles that stand in the way of physical impossibilities are material facts. And material facts are notoriously deceivin’. Really, y’ know, you lawyers would do better if you ignored them entirely.”

Markham did not deign to answer such heresy, but the look he gave Vance was most expressive.

CHAPTER XXVII.
A Game of Poker

(Monday, September 17; 9 p. m.)

Vance and I went home after lunch, and at about four o’clock Markham telephoned to say that he had made the necessary arrangements for the evening with Spotswoode, Mannix, and Cleaver. Immediately following this confirmation Vance left the house, and did not return until nearly eight o’clock. Though I was filled with curiosity at so unusual a proceeding, he refused to enlighten me. But when, at a quarter to nine, we went down-stairs to the waiting car, there was a man I did not know in the tonneau; and I at once connected him with Vance’s mysterious absence.

“I’ve asked Mr. Allen to join us to-night,” Vance vouchsafed, when he had introduced us. “You don’t play poker, and we really need another hand to make the game interestin’, y’ know. Mr. Allen, by the bye, is an old antagonist of mine.”