The portrait thus chosen by common accord was that of Frank Bruce, one of the most desperate burglars of the younger generation in the country, and it seemed only necessary now to find Bruce, to have the problem solved. Many days were spent, and hundreds of dollars, in searching for him. Dozens of cities were visited, and every conceivable effort made to get on his track; but it was not until his pursuers were almost weary of the chase that he was finally discovered living quietly in Chicago, on Cottage Grove Avenue, near Thirty-sixth Street, where he was operating with another high-class burglar, "Billy" Boyce. Requisition papers were at once procured from the governor of Iowa on the governor of Illinois, and men were sent to take Bruce into custody, when the "shadows" reported that he and Boyce had left for Milwaukee, where, of course, the requisition papers were valueless. Fortunately, that same night they attempted a burglary in Milwaukee, for which they were arrested and held for ninety days. This gave the Chicago detectives abundant time to identify Bruce as the missing robber. Mr. Pinkerton himself went at once to Milwaukee, saw Bruce in the jail, heard his story, verified its essential facts, and within two days, to his own complete disappointment, and in spite of himself, had proved a complete alibi for Bruce. To satisfy himself in this connection, Mr. Pinkerton brought conductor Ashmore and Mr. Shaw to Milwaukee, and pointed Bruce out to them; and, after looking carefully at him, both men declared they had made a mistake in choosing his portrait, and that Bruce was not the robber. With Bruce clear, the detectives were again without a suspect, and almost without a clue. Just here, however, Mr. Pinkerton recalled that on a trip to the West, some three years previous, to investigate the case of a man arrested at Reno, Nevada, on a charge of "holding up" a faro-bank, and while stopping over in Salt Lake City, Utah, he had run across some sporting men in that city with whom he was well acquainted, and on his telling them where he was going and what his business was, one of them, whom Mr. Pinkerton had known for years, had said: "Why, the man at Reno is innocent. The men who committed that robbery are in this city. One of them is a smooth-faced boy, about twenty years of age, and the other is a heavy-set, dark-complexioned fellow, with a dark mustache. They are the intimate friends and companions of Jack Denton, the well-known gambler of Salt Lake; and only a short time ago, at Salt Lake, they entered a house one night, going in through a rear door, and compelled two ladies, who were just returned from a ball, to give up a large amount of diamonds."