"I wonder where he would go?"
"The police are watching the roads and the trains. I don't think he can get out of the city that way. But I have an idea he has accomplices here, and if he can he'll join them and they'll see that he is smuggled out all right. I was going to suggest that you fellows take the motorboat and keep an eye on the bay."
"Good idea!" exclaimed Frank, who never needed an excuse to take the boat out. "Come on, Joe. Come on, Chet."
"I'll go out in dad's boat," volunteered Tony Prito.
"Fine!" agreed the others, and the boys hastened down the street in the direction of the boathouses.
Jerry Gilroy and Biff Hooper went with Tony, while Phil Cohen went with Chet and the Hardy boys.
Frank unlocked the door of the boathouse and went inside, followed by the others.
But the familiar shape of the Sleuth could not be seen.
The front of the boathouse was open. The motorboat had disappeared.
"The boat's gone!" he exclaimed in consternation.