"Well, it's pretty tough, and no mistake, to have a fellow of such villainous character circulating about in this region. I hope I won't be hung for his crime by indignant citizens. I agree with you that this Hubert Vander is a sleek villain, and that hanging is too good for him. It does seem that you made an important discovery last night, however." "Explain." "This man Vander no doubt murdered Captain Osborne." "I am led to think so myself," said Dyke Darrel. "He also jilted the Captain's daughter, if no worse, and the two sorrows turned the poor girl's brain. It is a sad and terrible case. I feel deeply interested, and hope to see the scoundrel who looks like me brought to justice." "I am glad to hear you say so." "Furthermore I have another idea." "Proceed." "It is undoubtedly this Vander who planned the robbery of the midnight express. A man who could deceive one so beautiful as this girl, would not hesitate to do anything to feather his own nest." "Again I agree with you." "Evidently it was either this man, or friends of his, who fastened the door of the cabin, and fired it with the hope of destroying the detective who was dogging them so closely." "True, I had thought of that." "And here's another thing." "Well?" "May not this Vander and his friends conclude that the man-hunter perished in the flames, if they fail to see him again? A disguise would fix that easily, you know." "No, that will not go down." "Why not?" "My enemies will visit the ruins of the cabin, and failing to discover skeletons, will learn the truth." "That does not necessarily follow." "I think it does. I may act on your suggestion, however," returned Dyke Darrel. "And put on a disguise?" "Yes." "What will it be?" The detective laughed. "Don't ask me, Harper," he said. "Of what use a disguise that my friends all understood?" "Is this because you fear to trust me, after what has happened, Dyke?" "No; but I prefer to keep my own counsel!" "And you are right." "I am glad you admit it." The friends then left the room. At the last moment, Dyke Darrel decided on accompanying the remains of Captain Osborne's daughter to Burlington. He realized that it was the proper thing to do. Elliston parted with the detective, telling him that he meant to return to Woodburg for the present, and would meet him there on his return from the Iowa city. It was a sad duty that led the railroad detective to revisit Burlington, which he had last looked upon in the fall, shortly after Captain Osborne's disappearance. Arrived in the bustling Western city, Dyke Darrel was met at the depot by a surprise. An officer laid his hand on the detective's shoulder, and said: "You are my prisoner, young man." "Eh? Well, now, what is this for?" demanded Dyke Darrel angrily. "FOR THE MURDER OF CAPTAIN OSBORNE AND HIS DAUGHTER!" Dyke Darrel felt the cold muzzle of a revolver touch his temple at the last. CHAPTER XV. A BAFFLED VILLAIN.