The diamonds which had been placed in the deposit vault belonged to Chet. At least the boy had had them in his possession when he came aboard the boat, and in the absence of any other claim upon them they belonged to him. If they did not belong to him, then their owner ought to be found. If they did, he ought to have possession of them.

Just how a boy had become possessed of a fortune in precious stones, Jule was not trying to figure out at that time. What was in his mind was the thought that the question of ownership ought to be settled at once. This question, he believed, could best be settled by the boy himself.

He waived, for the time being, all consideration of the possible connection of the gems with the Rock Island robbery, all consideration of the possible connection of the boy with the man known to him as Red, the Robber. Chet himself could best decide the question of ownership, and Jule thought he ought to be taken back to the boat, by force if necessary.

Just as the boy was on the point of pursuing the figure, now fast disappearing in the shadows along the levee, Mose pulled at his arm and pointed to Captain Joe. The dog, with short ears and tail rampant, was crouching close to the closed door of the house, uttering low growls as his paws moved toward the threshold.

“Alex. in dar!” the little negro exclaimed.

Then there came a heavy, stumbling footstep along the walk, and a burly man in the garb of a riverman paused at the door, overlooking the boys crouched at the angle of the house, but cursing the dog drunkenly. Captain Joe behaved remarkably well under the kicks delivered at him, and the newcomer took a key from his pocket and opened the door. Before he could enter the dog had disappeared in the darkness of the interior.

“I reckon Alex. is in there, perhaps Case, too,” Jule muttered.

“Yo’ sure cain’t fool dat purp!” Mose whispered.

The boys did not attempt to follow on into the house by the open doorway, but passed on to the window and entered there. All was still dark inside. They could hear the man who had just entered moving about, still striking at and cursing the dog.

Directly another key was turned, and then all was confusion. Jule switched on his flashlight and the circle it cut in the darkness revealed the man standing in a doorway with a long-barreled revolver in one shaking hand. The casings of the doorway appeared to be of two-inch plank, and the door itself was crossed by iron bands.