Ricker and his companion, however, took a route that relieved the wary watchers of the necessity of doing lively footwork to keep out of sight. The path followed was that across the platform toward the top of the stairway descending to the basement. Through the opening there the pair disappeared.

The first thought then with the boys was to immediately release the prisoner in the counting house from his uncomfortable predicament, but a second thought made this preceding one for debate. Through no fault of their own, and, unconsciously, the lads had been indirectly connected with recent Warsaw operations of Ricker, and to be well rid of him was a matter of self-protection. Having squared themselves with the Cossack, Nikita, the passing of the silversmith would be a final clearance of old scores.

“Let’s give them an hour’s leeway, and then we’ll cut his nobs loose,” suggested Henri; “the chap in there would start something mighty quick the minute he got on his feet, and there’s no telling what might be coming to us if Ricker was brought to bay. He’d surely think we had betrayed him.”

“Yes, and come to think of it, as we did before, the authorities here might not accept graciously our plea of innocence. We’d get it both going and coming. Plenty of time to untie the policeman. He ought to be thankful that it is only one hour instead of twenty-four, and maybe a good sight longer than that, if we did not interfere.”

Billy’s conclusion would have stood as satisfactory but for a startling development of the instant. Some intuitive process of the mind caused him to cast a glance over his shoulder, and within twenty feet of him, coming with cat-like tread from the far front of the warehouse, was the threatening shape of Hamar. It is doubtful if the hairy henchman of Ricker was then aware of the presence of the boys, and if he had any special purpose for carrying an unsheathed knife in his hand, the reason must be accounted for in the person of the unfortunate policeman on the counting house floor. Hamar was of the fiery brand of conspirator who resented any application of law, and woe to the man who affronted him. The poisoned ring episode was an instance in point.

Henri, gazing in another direction, for the moment, was wholly oblivious of the new peril at hand until apprised by a hiss from Billy. Half turning, the French boy was looking full into the malignant face of the velvet-footed oncomer.

With a side leap that covered several feet, Henri dashed around the cabin, meeting his chum, who had jumped on the other side, at the front entrance, both crossing the threshold at one step, and banging the door behind them. Billy grabbed at the bolt just over the latch, and sent it with a snap into its socket.

“Gee whillikens,” he panted, “that was some acrobatic act!”

The door creaked and cracked with the outside pressure that a powerful and infuriated man was exerting against it.

The boys hastily dragged forward the several heavy benches in the room and stacked them up for an additional and supporting barrier.