Andy had walked to the corridor door and opened it. As he glanced down the semi-dark hallway he saw Fatty Hendry approaching.

“Say, Fatty,” he called out, “come here a minute! A lot of our stuff has been taken from our rooms. Do you know anything about it?”

“Not a thing,” returned the stout cadet. “What’s the matter—somebody play a trick on you fellows?” And then, after Andy had explained briefly, Fatty continued: “Maybe I can give you a clew. A while ago I came upstairs to get a book I had promised to Phil Franklin. As I came past here I saw Dock Wesley at your door. He looked rather scared and slid down the corridor as fast as he could. He had something under his arm.”

“Dock Wesley!” repeated Jack. “Why, he’s the new kid who is chumming with Codfish!”

“I wouldn’t put it past Codfish to try something like this to get square for being exposed the way he was,” remarked Fred, who had followed Andy to the doorway.

“You didn’t see anybody else, Fatty?” asked Randy, who had joined the others.

“Not a soul. But wait a minute! Come to think of it, I did meet Wesley and Codfish a little later, along with some of the other fellows, and the bunch were having a good laugh over something.”

“Then I guess we have struck a clew,” declared Fred. “Come on, and we’ll soon get to the bottom of this.”

The Rover boys, followed by Gif, Spouter and Fatty, hurried down the corridor and around a corner where was located the room occupied by Codfish and Dock Wesley. They knocked on the door, but to this there was no response. Then they knocked again, and at last a somewhat faltering voice asked who was there.

“It’s Major Rover,” called out Jack. “Stowell, I want to talk to you.”