The manipulation of the lock by means of a false key seemed to come easy to Mortimer. In a moment he was inside the room. What he did there Andy and Dunk could not see, but he remained but a few minutes, and came out, softly closing the door after him.
“I wonder what he got?” whispered Dunk.
“We’ll soon know,” was Andy’s answer.
Mortimer went softly down the corridor. He did not try every door, but only went in certain rooms, and these, the two watchers noticed, were those where well-to-do students lived.
Mortimer made four or five visits, and then moved towards the apartment of Andy and Dunk.
“It’s our turn now,” whispered the latter.
Silently they turned a corner, just in time to see Mortimer enter their room.
“Now we’ve got him!” exulted Andy.
“Not yet; we’ve got to nab him,” whispered Dunk. “Oh, Andy, this is fierce! To think that we’re spying on a Yale man! To think that a Yale man should turn out to be a common thief! It makes me sick!”
“Same here,” sighed Andy. “But the only way to stop suspicion from falling on others is to get Mortimer with the goods. We’ve got to save Link, too.”