"What's up?" asked Phil, who was some seats away.
"Link Merwell,—up in the balcony," answered Dave, and pointed with his finger. Phil turned in the direction, and as he did so, Link Merwell doubled up his fist and raised it in the air for an instant.
"Merwell, sure as you're born," said the shipowner's son. "And full of fight!"
"Oh, Dave, you mustn't quarrel here!" whispered Laura, who sat on the other side of Roger.
"We'll not quarrel here," answered her brother. "But I am glad I saw him," he added to his chums. "Now we can keep on our guard."
The play went on, and, for the time being, the boys and the girls paid no further attention to Link Merwell. Just as the final curtain was being lowered, Dave looked up toward the balcony.
"He has gone," he announced.
"Perhaps he was afraid we'd come after him," suggested Phil.
"Maybe he came downstairs to watch for us," added Roger. "Keep your eyes open when we go out."
They did as the senator's son suggested. They saw nothing of Merwell in the foyer, but came face to face with the former student of Oak Hall on the sidewalk. He glared at them, but then seeing Dunston Porter at Dave's side, slunk be-
