“This is all the evidence you need against the counterfeiters, Chief,” said Mr. Hardy. “I can see there are plenty of fingerprints on this equipment. We know some will match the one on the 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 âand 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!”