"Go away!" he exclaimed. "I don't know you!"
"Why! Why!" cried Frank, in great surprise. "Don't you remember. I am—"
"I know, you are the king of the cannibal islands, and you are trying to capture me. Go away, I say! I am only a poor explorer, but I will fight for my liberty!"
Then the door was slammed shut, and the man in the room began screaming and calling for help.
Frank gave way to despair. It was all over now. He had hoped the man would remain in a sane state long enough to be able to understand that a change of plan was necessary. Now he could comprehend nothing.
"I can never rescue him!" Frank exclaimed, as he ran to give the signal that one of the patients was violent.
With the attendants came Dr. Hardman. As he caught sight of Frank he cried excitedly:
"Where have you been? I have been waiting for you. Come to my office at once! You have broken the rules! I want an explanation!"
He turned, evidently expecting Frank to follow, but the boy was going to do nothing of the sort. He went down the corridor, until he came to where a flight of stairs led to the exercise yard. Then, running swiftly on his tip-toes so as to make no noise, he went down them.
"I'm going to leave," he said to himself. "It's time for action now. I'm going back to camp!"