IX – The Cupidity Of Marks–––––––– "YOU CURSED DOLT, YOU infernal fool!" stormed the detective, catching Billy by the collar and shaking him like a rat. "Do you mean to tell me that you had one of the Four Just Men in your hand, and did not even take the trouble to look at him?" Billy wrenched himself free. "You leave me alone!" he said defiantly. "How was I to know it was one of the Four Just Men, and how do you know it was?" he added with a cunning twist of his face. Billy's mind was beginning to work rapidly. He saw in this staggering statement of the detective a chance of making capital out of the position which to within a few minutes he had regarded as singularly unfortunate. "I did get a bit of a glance at 'em," he said, "they—" "Them—they?" said the detective quickly. "How man