side. In the glare of the headlight Frank and Joe could see Tony Prito, Jerry Gilroy and Phil Cohen.
Their greetings were cut short when the boys saw the two trailing boats and Frank tersely explained the situation.
"You couldn't have come at a better time. We found Chet and Biff on the island. They're still there. We tried to escape, but got separated and only Joe and I got away. Chet and Biff are in hiding somewhere and we stole the other motorboats."
"Whose motorboats?" asked Jerry.
"Chet and Biff were captured by a gang of crooks who mistook them for us. These fellows had a cave on the island and two motorboats of their own. When we made our get-away we towed their boats away with us so the men are all marooned there."
A chorus of excited questions broke forth as the newcomers demanded further details, but Frank went on:
"We're going to the mainland for help. What we want you to do is take charge of these two motorboats and keep cruising around the island to see that the gang doesn't get away."
"Good!" approved Phil. "And if we can pick up Chet and Biff we'll do it."
"If you can, without letting the gang get hold of those boats again."
