“That’s what we’ll do, Mr. Swift!” came the reassuring chorus.

“And if we find any of the scoundrels we’ll string ’em up!” yelled one enthusiastic and indignant workman.

“No, don’t do anything rash or unlawful!” warned the young inventor. “Make any intruder you catch a prisoner and bring him to me.”

The men scattered to make a thorough search, and then Tom went into his private laboratory where his father and Ned had preceded him. He wanted to talk the situation over with them.

“What do you think, Dad?” asked Tom, when he had related to his parent the latest attempt.

“Well,” was the careful answer, “to me it looks like a deep-laid plot against you. They don’t want you to put these talking pictures on the market.”

“But how is it their business?” asked Ned. “I mean the business of whoever is doing these tricks.”

“It concerns them vitally,” replied Mr. Swift. “Why, just think what it would mean if a whole theatrical performance could be thrown on the screen in private homes!”

“That’s what I’m going to make possible!” declared the young inventor. “Those who buy my machine will not only hear but, on the screen attached to the apparatus, they will see the performers!”

“It may mean ruin to many regular theaters and moving picture houses, Tom,” warned Mr. Swift. “Those people have millions of dollars invested in their projects. They evidently mean business,” and he tapped the warning letter Eradicate had received.