With the men in secure, safe custody, there was no doubt of their ultimate conviction; and every one was breathing easier at the thought that at last the Reno gang was robbed of its terrors. Then suddenly--no one will ever know how it happened--the prisoners made their escape. Great was the surprise and chagrin of the sheriff of Mills County when, on the morning of April 1, 1868, he entered the jail, only to find their cells empty. A big hole sawed through the wall told by what way they had made their exit. They left behind the mocking salutation, "April Fool," scrawled in chalk over the floors and walls of the jail. A large reward was offered for the capture of the robbers, but nothing was heard of them until two months later, when an express-car on the Ohio and Mississippi Railroad was boarded at Marshfield, Indiana, by a gang of masked men, and robbed of ninety-eight thousand dollars. The messenger made a brave resistance, but could not cope with the robbers, who lifted him bodily and hurled him out of the car, down a steep embankment, while the train was running at high speed. All the facts in the case pointed to the Reno brothers as the authors of this outrage, for by frequent repetition their methods of robbery had become familiar. Allan Pinkerton, furthermore, obtained precise evidence that it was the work of the Renos from secret agents whom he had stationed at Seymour to watch the doings of the gang. Two of these agents engaged apparently in business at Seymour, one setting up as a saloon-keeper in a rough part of the town, another taking railroad employment, which kept him constantly near the station. A third made a wide acquaintance by passing for a gambler and general good fellow. So successful were they that Allan Pinkerton was soon in possession of facts proving not only that the Marshfield robbery had been committed by the Renos, but that another train robbery which followed was executed by John Moore, Charles Gerroll, William Sparks, and three others, all members of the Reno organization. Moore, Gerroll, and Sparks were arrested shortly after, and placed on a train to be taken from Seymour to Brownstown, the county-seat. But they never reached their destination. As the train stopped at a small station some miles from Brownstown, a band of masked men, well armed, rushed on board, overpowered the officers, hurried the three outlaws away to a neighboring farm-yard, and there strung them up to a beech-tree, while an old German who owned the farm looked on approvingly.