"Wait until we get more evidence against them," he urged.

"But they may skip out!" objected Mary's uncle.

"They won't with that Landmark Building on their hands," said the young inventor.

"Their hands! Huh! They'll take precious good care that the trouble and responsibility of it are on other people's hands before they go," declared Mr. Blake. "However, I suppose you're right. Barton Keith sets a deal by your opinion since that undersea search, and while I don't always agree with him, I do in this case. Especially since he is likely to have the laugh on me."

"Oh, I wouldn't count everything lost in that building deal," said Tom. "A way may be found out of the trouble yet. But I must be getting back. Dr. Henderson was to give a report today on the condition of Eradicate's eyes, and I want to be there."

"Mary was saying something about your faithful old retainer being in trouble," said Mr. Blake. "I'm sorry to hear about it."

"We are all sorry for poor Rad," replied Tom slowly. "I only hope he gets his sight back. His last days will be very sad if he doesn't."

Tom found Mary waiting for him after he had left her uncle, and, after a short talk with her, he made ready to ride back with Mr. Damon, who, after having attended to several other matters, was now outside in his car.

"When are you coming home, Mary?" Tom asked.

"In a week or two," she answered. "I'll send word when I'm ready and you can come and get me."