"A burglar?" questioned Billy.
"Some sort of crook I'll bet," exclaimed Noddy.
"He's up to some mischief or I'm much mistaken," said Jack, as he drew his companions back further into a patch of black shadow cast by some ornamental shrubs.
"Let's trail him and see what he's up to," said Noddy.
"Gracious, you're a regular Sherlock Holmes at the drop of the hat," laughed Billy. "What do you think, Jack?"
"I don't know. He's going toward the wharf and I don't see just what he could steal there."
"Look at him stop and glance all around him as if he was afraid of being followed," whispered Billy.
"That doesn't look like an honest man's action, certainly," agreed Jack. "Come on, boys; we'll see what's in the wind. Do you know, somehow I've got an idea that we've seen that fellow somewhere before."
"What gives you that impression?" asked Billy.
"I can't say—it's just a feeling I've got. An instinct I guess you might call it."