“Shade my eyes!” exclaimed the Chief. “What have we here?”

“Looks like diamonds to me,” said Johnny with a grin.

“So they are!” exclaimed the Chief, seizing a small case and examining its contents closely. “And that was the game. Knobs was in with the diamond merchant! Man! What a haul they would have made!”

The next instant he dashed to the telephone.

“That you, Cassidy?” he said a moment later. “The Fire Chief speaking. Hold Knobs without bail. We’ve got the goods on him. A dead open and shut case. He’ll do twenty years for last night’s work.

“Now,” he said to Johnny after resuming his usual composed manner, “what was this you were telling me about the firebug being dead?”

“That was something else.”

“Another one?”

“The one who set fire to Forest City, and all those other places of public pleasure, the enemy of happiness. Do you remember the tall stooped man with a hook-nose and a limp that I spoke to you about?”

“Yes.”