Although he had no real evidence against him the detective was now sure of his man, and felt certain that, somewhere in the mazes of New York City, Coleman and the missing jewels would be found. Returning to New York, Dougherty roamed the streets of the city, day and night, looking for Coleman. After two weeks of fruitless search he met one of Coleman's "pals" coming up Eighth Avenue. Acting on the theory that this man would ultimately get in touch with Coleman, the detective determined to keep him in sight. He shadowed him all night, following him from haunt to haunt. The next morning, when Coleman's friend retired to a rooming-house, and asked for a bed, Dougherty put two subordinates on guard, while he himself snatched a few hours of sleep. The detective proved to be upon the right track, for within thirty-six hours the shadowed man joined Billy Coleman. The suspected thief occupied a flat at 271 West 154th Street. From this time Dougherty or one of his deputies followed every movement of Billy Coleman. Day after day they tracked him through the city from one resort to another. In the evening they followed him home, and kept a watchful eye on the premises. Coleman's actions were provokingly innocent. At nightfall he frequently left home, accompanied by his wife, but only to take their little dog out for an airing. On a Sunday evening while Dougherty was shadowing Coleman and his wife, hoping that they might lead him to some clue to the robbery, he was amazed to see them enter an Episcopal church, where they remained throughout the service. Bishop Potter, to whom Dougherty had confided his suspicions of Coleman, laughed heartily when the detective mentioned this incident. "Surely, Dougherty, you don't want me to believe that one good churchman would rob another, do you?" the Bishop exclaimed.