“I remember that, too,” Larry said.

“The English company became suspicious,” Dick went on. “They sent a man—we’ve called him ‘the passenger’—to this side, suspecting that some effort was on foot to hide the gems or get rid of them till the insurance was paid—it’s a trick that has been worked.”

“I begin to understand,” said Larry. “The man from England hired the stunt pilot to fly him out to meet the yacht—but how did he know when it would arrive?”

“Can’t you guess?”

“I can,” said Jeff. “That English fellow was that-there ‘spook.’ Maybe he ‘listened in’ on the short wave set in the big house yonder.”

“That’s probably it,” Dick retorted. “Anyway, he flew out, and when he saw the amphibian and the small hydroplane and our airplane, he jumped to the idea that either one or more gangs of robbers had somebody on the yacht to get the jewels and throw them out, or else——”

“Wait!” urged Larry. “How does the gum fit in with that?”

“That’s so,” said Dick. “Let’s go up to the house and see what Mr. Everdail says.”

“If he is Mr. Everdail, after all,” Larry said.

“Oh, his wife would know any impersonator,” argued Dick. “So will Jeff.”