“Do you think so now?” inquired the inventor, turning sharply face about.

“I certainly thought I knew you.”

“And suppose you was right?”

“If you were really the person I supposed,” replied Andy, “I would have done just exactly what I promised to do when I last saw that person.”

“And what was that?”

“To forget it.”

“You’d keep your word, eh?”

“I generally try to.”

The man’s eyes seemed riveted on Andy in a peculiar way that made the boy squirm. There was something uncanny about it all. Andy experienced a decidedly disagreeable creeping sensation. The inventor was silent for a moment or two. Then he asked:

“Who sent you here?”