Was that the possible explanation of the missing wireless boy? The thought of this complication shocked him. What could it mean? The detective had evidently fitted the whole thing together.

Finger-prints were finger-prints, thought Tom, and a finger-print with illegible markings in the center meant a telegraph operator, so far as this particular incident was concerned. He so greatly admired Mr. Conne that as usual he forgot to admire himself....

The man must have been discovered, either in the act of placing the bomb, or perhaps of trying to remove it when he found that he must sail with the ship, and there had been a scuffle and—

And what? Where was the wireless boy?

Alas, though the spy was apprehended, it was to be many long months before the mystery of the missing wireless boy should be cleared up. And who, of all the people in the world, do you suppose cleared it up? Who but Pee-wee Harris (don't laugh) and his trusty belt-axe. But that is part of another story.

The arrest of "Dr. Curry" as a German spy and plotter was a nine hours' wonder on the ship, and the part which Tom Slade had played in the affair did not pass without comment. Neither the ship's officers nor Mr. Conne took him into their confidence as to the character of the papers found on the "doctor," but he understood that that scornful personage was safely lodged somewhere "below," and Mr. Conne did go so far as to tell him that "our friend" had set his watch right. Tom did not dare to ask questions, even of his friend the detective, who chatted pleasantly with him whenever they met.

He was the last boy in the world to expect more consideration than was due him or to make much of his own exploits, and if his superiors did not take him into partnership and make him their confidant and adviser, as undoubtedly they would have done in a story, they at least treated him with rather more consideration than is usually given to ships' boys, and the awkward young fellow in the ill-fitting duck jacket and peaked hat askew was pointed out among the army men and passengers, as he occasionally passed along the decks, as one who had a head on his shoulders and a pair of eyes in his head.

No one questioned that he had saved the vessel by making known the clew which had sent Dr. Curry to the ship's lock-up, and Tom, satisfied to have done something worth while for Uncle Sam, attended to his menial duties, and did not think of very much else.

But if Uncle Sam's Secret Service man had thought it best not to be too confidential with him, kind Fate decreed that it should be Tom Slade and none other who should clinch the case against this foreign wretch whose plans he had thwarted.

It happened the very next day, beginning with a circumstance which made Tom feel indeed like a hero in a cheap thriller.