“And you will remember, if you have read the official minutes of the case, the Commissioner rang up Froyant in response to a call which Harvey Froyant had put through. That call gave Yale his opportunity. It was an excuse for Froyant sending us out of the room. I went first, never dreaming that he would dare do what he did. When we went into the room we wore our overcoats, and I particularly noticed that Derrick Yale kept his hand in his pocket. On the hand, gentlemen,” he said impressively, “was a motor-driver’s gauntlet, and in that hand was the knife that slew Froyant.” “But why did he wear the glove?” asked the Prime Minister. “In order that his hand, which I should see immediately afterwards, should not be bloodstained. The moment my back was turned, he lunged straight at Froyant’s heart, and Froyant must have died instantly. He slipped off the glove and left it on the table, walked to the door, and seemed to be carrying on a conversation with a man who was already dead. “I knew this had happened, but I had no proof. He had brought my daughter there, intending to get her into the house, which we immediately searched, with the intention of accusing her of the crime. But she very wisely went no farther than to the back of the house and then, suspecting his plot, went home. But I am anticipating. Amongst the people whom we had to guard was James Beardmore, and James Beardmore was a land speculator, a man who knew all kinds of people, good and bad. That day he was expecting a visit from Marl, whom he had never seen, and he mentioned Marl’s name earlier in the day to his son, but not to Derrick Yale. As Marl came toward the house the last person in the world he expected to see was his fellow criminal of Toulouse Gaol, a man whom he had betrayed to his death. “Derrick Yale must have been standing at the end of the shrubbery, and Marl caught a momentary glimpse of him and went back to the village, ostensibly to London, in a panic of fright, determined, in his fear, that he would kill Lightman before Lightman killed him. His courage must have oozed. He was not a particularly brave man, and instead he wrote a letter to Yale, pushing it under his window--a letter which Yale read and partially burnt. What the letter was I cannot tell you, except it was probably a statement that if he, Marl, was left alone, he would leave Yale alone. He could not have known in what capacity Mr. Derrick Yale was posing. The words ‘Block B’ undoubtedly referred to the Block at Toulouse Prison. “From that moment Marl was a doomed man. He was conducting a little blackmail of his own with Brabazon, an agent of the Crimson Circle, and Brabazon must have intimated the danger to Yale who, in his capacity as detective, visited the shop to which all the Crimson Circle letters were addressed, and on the pretext of aiding justice opened them of course and saw their contents, without having the responsibility of being the person to whom they were addressed.