latter might have a canoe or a skiff hidden somewhere on the island, but he did not think they would trust themselves to the open water of the channel in any such frail craft. He felt convinced that by seizing the two motorboats they had effectually marooned their enemies.
They passed the last jutting point of the sinister island and the bow of the Sleuth was headed toward the coast.
"Perhaps we won't have to go all the way to Rock Harbor," suggested Joe. "If we could meet a ship we might get help."
"It seems to me I see a light now. Running low on the water. Do you see it?"
Joe peered into the darkness.
"I believe you're right," he said finally. "It seems to be coming this way, too."
"Perhaps some more of the gang."
"I hadn't thought of that. Better not go too close."
Frank eyed the approaching light warily. It was just a faint gleam in the darkness and he judged it was from a motorboat which was most certainly bound toward Blacksnake Island. Eventually he could hear the steady throb of the engine.
After a moment or so he started up excitedly.
"Joe! I'd know that engine anywhere."
"So would I! It's—"
