“I don’t know.”

“I’ll bet I do!” muttered Chet.

Five minutes later Arlington was also hurrying away.

“Let me catch him!” he growled. “I know where he has gone! He is playing a double game.”

Coming to the woods, he hurried along the path that led to the rustic bridge over Ripple Brook. As he approached the vicinity of the bridge he moved with great caution, coming at last to a point where he could look down along the path and see the bridge. There he suddenly halted. Leaning on the rail of the bridge, he saw Zona Desmond.

Beyond Zona, at the opposite end of the bridge, partly hidden from view, he beheld another girl in company with Dick, who was talking to her. The foliage prevented him from obtaining more than a glimpse of them, and immediately he hissed:

“I knew it! He came here to meet Doris. If ever there was a two-faced duffer, it is Merriwell; but I will fix him—I will fix him!”

Backing away a short distance, he turned and fled along the path, retracing his course. He did not stop running until he was within sight of the academy. There were some boys on the parade ground, and he hastened toward them.

“Seen anything of Darrell?” he asked.

“Why, yes,” answered one. “There he is over yonder.”