Suppose the thing she had hit when she dived was the Bright Eyes, Dr. Shelton’s lost motor boat?

Wyn was about to shout to the other girls–to call them around her to divulge the idea that had come into her mind–when a hail from the water announced the return of the Busters.

She remembered Mr. Lavine’s promise. The two clubs were rivals in this matter. Wouldn’t it be a fine thing for the Go-Aheads to own a motor boat all by themselves!

Wyn got up and dived again. But she did not dive toward the mysterious something that she had previously found. She swam stoutly instead to meet the coming Busters.


CHAPTER XXIV
THE NIGHT ALARM

Wyn Mallory had “another mind,” as the saying is, before the Go-Aheads left the island and paddled swiftly for their own camp.

She determined not to say anything to her girl friends of the club about the sunken object she had hit under the water. Perhaps it was nothing of any consequence; then they would laugh at her. If it was the lost motor boat, to tell the girls might spread the story farther than it ought to be spread at once.

The Go-Aheads and the Busters were rivals. Mr. Lavine had promised the prize to whichever club found the sunken boat and the box of silver images that Dr. Shelton had accused John Jarley of stealing.

“And it may not be anything, after all,” thought Wyn. “It may be a false alarm. Then the boys would have the laugh on us.”