finger guard. Besides your evidence, boys, Ken's testimony should be more than enough to
convict them."
"What about Jordan, Blum's confederate at Elekton?" Frank asked.
Mr. Hardy smiled. "He was my big prize and I'm glad to say he is in jail!" The detective explained that further sleuthing had led to Jordan -and through him, Paul Blum. Mr. Hardy's first break
had come when he learned that one Elekton employee had seen Jordan going toward the
laboratory building at closing time on the day of the explosion.
A police guard was assigned to watch the counterfeiters' workshop and its contents. Then the
four boys, Mr. Hardy, and the chief left the mill. Outside, they paused and looked back at the turning wheel.
Frank laughed. "Its signaling days are over."
"Sure hope so," Chet declared firmly. "No more mysteries for a while, please!"
Tony chuckled. "With Frank and Joe around, I wouldn't count on it."
His words proved to be true. Sooner than even the Hardy boys expected, they were called upon
to solve the mystery of THE MISSING CHUMS.
Now Joe turned to their plump friend. "Good thing you bought that microscope, Chet. We
started to look for nature specimens and dug up the old mill's secret!"