For answer the secretary pressed a bell that stood on his table at his elbow. When in response the bowing old negro appeared he said sharply:
“Send Flynn here.”
Flynn turned out to be a thick-set, red-faced man with the neck of a bull and powerful physique. He was one of the most trusted men in the Secret Service Bureau.
“Flynn,” said the secretary when the detective had introduced his huge bulk, “these young men are Frank and Harry Chester, the Boy Aviators, they are going to take up your work where you left it off.”
“Only because we were up against a dead wall,” protested the agent.
“Quite so—quite so; I meant no offence. I know that you did all it was humanly possible to accomplish. What I want you to do now is to outline to these young men the discoveries you made following the morning on which we found the safe opened and the plans gone,—to be followed a few hours later by the discovery that Lieutenant Chapin had also vanished.”
“Well,” said Flynn, “cutting out the minor details we discovered that the very same day a big white yacht had cleared from New York without papers and had headed toward the south. We traced her up and found that she had been bought by a Mr. Brownjohn of Beaver Street. We looked him up and found he was a ship broker who had bought the craft on telegraphed instructions from Washington. We trailed up the telegram and found that it had been sent from the Hotel Willard by a Captain Mortimer Bellman, who, from what we can find out about him, was considerable of an adventurer and had at one time lived a good deal in the far East. In fact he had only recently come from there. At the Marine Basin at Ulmer Park, near Coney Island, we discovered that a nondescript sort of a crew had been hustled on board and that the yacht had sailed at night without papers a few hours after her purchase was completed.
“Ten days later the newspapers reported that a large yacht had gone ashore on one of the Ten Thousand Islands on the west coast of the Everglades, and the men we sent down there to investigate discovered that the derelict was the Mist,—the same yacht that Bellman had bought. What was most remarkable, however, was that the boat seemed to have been deliberately wrecked, for everything had been taken off her except her coal and ballast and all the boats were gone. There was no indication that she had been abandoned in a hurry and the reef on which she lay was such an obvious one that even at high water it was clearly visible. Now that the Mist’s boats went into the Everglades we are reasonably sure. If they had gone anywhere else we should have got some trace of them by this time, but from that day to this we have not had a word or sign concerning them.”
“We have heard, however, that the navy of the power we suspect has been conducting experiments with a new explosive and we have also learned that this same explosive is undoubtedly Chapinite. We have looked up Bellman’s record and find that while he was stopping at the Willard he received several letters from the government in question and that he paid twenty thousand dollars for the Mist. Now a man isn’t going to pay that much out for a boat and wreck her unless he does it purposely. Bellman didn’t have that much money anyhow. There is only one conclusion, Bellman was simply the agent for some one else and that some one has got a lot of money to spend to secure the most powerful explosive ever discovered.”
“There you have the case in a nutshell,” remarked the secretary as Flynn concluded.