against the wall to take advantage of the security afforded by the shadows, and began to circle the building. The Hawk was treading silently now. Halfway around the building he halted abruptly, his head cocked suddenly in a listening attitude toward a small, open and lighted window on a level with his shoulders, and in order to pass which he had just been on the point of stooping down.
"I think," said the Hawk softly to himself, "I think this sounds as though it interested me."
He crept cautiously forward, and from the edge of the window glanced inside. It was the turner's "cubbyhole," or office. The door was closed, and two men were standing there, talking earnestly. The Hawk's face, dimly outlined now in the window light, smooth-shaven, square-jawed, the eyes and forehead hidden by the brim of the slouch hat that was pulled forward almost to the bridge of his nose, set with a curious and significant smile. It was not a bad place for a private conference! He had thought he had recognised the voice—and he had not been mistaken. The big, heavy-built, thin-lipped, pugnacious-faced man was MacVightie, the head of the railroad's detective force; the other, a smaller man, with alert grey eyes, his forehead furrowed anxiously, whose clenched hand rested on the table, was Lanson, the division superintendent.
"I don't know, damn it, MacVightie!" Lanson was saying savagely. "I don't know what to think, or believe—I only know that a Pullman hold-up one night, a twenty-thousand-dollar necklace stolen the
