Blick thanked him and went out. A policeman who stood staring around him on the opposite side of the street, caught sight of and came across to him. “The Chief sent me out to look for you, Mr. Blick,” he announced as he came up. “He says will you go back to his office?—there’s a young man called that he wants you to see. This Markenmore affair, he said.” Blick hurried back to the police-station, and to the Chief Constable’s room. In a chair by the fireside sat the young man to whom the policeman had referred, watching the Chief Constable, who was reading and signing documents. He was a very meek and mild young man, thought Blick, as far as appearance went; an intellectual of some sort, evidently. He had a very high, broad forehead; a mass of long and untidy hair brushed back from it; a pair of large, somewhat brilliant eyes; a wide, sensitive mouth, and a generally high-strung aspect. Blick’s sharp eyes took all this in at a glance; he also observed that the young man’s black coat was very much stained in front, as though he was in the bad habit of spilling things on it, and that his long, delicately-fashioned fingers were also stained—his hands, in fact, from wrists to finger-tips were disfigured with odd patches of green, purples, and scarlets. A queer-looking chap, thought the detective, and yet, no ordinary one. The Chief Constable signed a big blue paper, pushed it away from him, laid down his pen, and swung round in his chair. He waved a hand towards the figure on the hearth. “This young gentleman has looked in to say that he’s been reading about the Markenmore problem in the papers, and that he thinks he can throw some light on it,” he announced, glancing at Blick. “I waited till you came before hearing what he’s got to say. Now,” he continued, nodding at the visitor, “you can go ahead! This is Detective-Sergeant Blick, of the Criminal Investigation Department, who has this case in hand. You can tell him and me anything you like—in privacy and confidence. And first of all—to whom are we talking?” The visitor looked from one man to the other and spoke in quiet, even tones. “My name is Spindler,” he answered, “Eustace Spindler—I’m an assistant in Moore and Smith’s chemist and druggists, Farsham.” “I know it—very good, high-class business,” said the Chief Constable. “Old established.” He turned and threw an aside to Blick, who had sat down near him. “This is the chap Lansbury told us of,” he whispered. “The chap who had the secret to sell.” He looked round again at the caller. “Well, Mr. Spindler,” he continued, “glad to hear anything you can tell.” “It is in strict confidence, of course?” enquired Spindler. “Strictly between ourselves—at present, at any rate?” “You put it in the precise fashion,” assented the Chief Constable. “At present—at any rate.”