“It’s a good thing we came down,” Tom Brewster said. “You were late. We thought you might have run up against something.”

“We sure did, Dad,” Biff assured him.

“I’ll have to investigate. Can you tell me exactly where this thing you think is a bomb is located?”

“You’re not going on board, are you, Dad?” Biff asked, his voice filled with anxiety.

“I think it will be all right. I have an idea that bomb isn’t intended to go off while the boat’s still in harbor.”

“But, Dad, it might,” Biff protested.

“Biff, I’ve handled dynamite and other types of explosives in my work. I was also in the bomb demolition service in the army. I can handle it. You stay back, though, all of you, until I give you an all-clear. Now just where is this thing you found?”

“Directly under the carburetor,” Biff replied.

“Here, you’ll need this.” He handed his father the flashlight.

They watched Mr. Brewster’s head disappear as he moved down the steps from the cockpit to the first cabin.