"Hello!" exclaimed Frank, as if surprised. "Who are you?"
"'Sh!" hissed the stranger, with a warning gesture. "Are we alone?"
"Yes."
"Where is your roommate?"
"Out."
The fellow whistled sharply, and the next minute four masked lads appeared at the door and leaped into the room. One of them slammed the door shut and the others sprang at Frank.
Merriwell flung a book at the first one, and it struck the fellow's mask, tearing it from his face.
The well-known countenance of Bruce Browning was exposed!
"Good-evening, Browning!" cheerfully called the lively freshman as he darted behind the table. "I have been expecting a call from you."
"Grab him!" directed Browning. "Get hold of him!"