"Take a look in the boat," Scotty suggested.
Rick did so, lifting himself up on the gunwale. There was nothing in the boat but oars and a can of gasoline.
"Want to tell us why you tried to run us down?" Rick asked.
The shadow merely stared.
"Talk," Scotty ordered, "or I'll put this spear through you."
The man spoke, and his accent was the soft speech of the island. "No, you won't. I could explain running down swimmers by accident, but you could never explain putting a spear through a man in a boat. You don't want that kind of trouble."
Scotty grinned at the truth of it. "Okay," he said. "Just one thing. Don't push us too far. Stay in the water until we're ashore, and don't try to overtake us."
"Better heed that advice," Rick warned. "Come on, Scotty. Let's go." He put his snorkel in place.
Scotty moved to his side. "Welcome to the hospitable waters of St. Thomas," he said. "What say we look up some friendly sharks before we go ashore?"