"Then and there. He let out a sort of funny cry, grabbed his stomach, and fainted dead away. We brought him to, and he started crying that he hadn't meant to hurt anyone.
"Dr. Bond asked him bluntly if he was the Earthman, and he was so shaken I guess he didn't even think of trying to get out of it. He just nodded. Gee-Gee Gould had him by the throat in a minute, and I think he would have strangled him. But we got him off Miller and persuaded him to let the law take its course.
"After Dr. Bond and Miller finished putting the monk in place and started down, Miller said he had left his tool kit, and went back to get it. He must have changed the circuit then. I suppose in his excitement and fear of discovery he forgot the door. Later, he must have remembered and went back to close it, not knowing you were inside. Dr. Bond blames himself because he didn't stay with Miller."
Rick shook his head. "I can't understand it. Why would Miller do such a thing?"
"Obviously, he isn't a normal human being, in our sense of the word."
"You mean he's insane?" Scotty asked.
"No. Not insane. He's what some people call a psychopath. He is not morally responsible. In other words, he can't distinguish right from wrong, as most people understand the terms."
"That explains why he was able to do those things," Rick agreed. "But it doesn't explain why he became the Earthman and sabotaged rockets."
"We have a good explanation of that," John Gordon said. "It goes back to some time ago when selection of personnel for the projects began. Both Frank Miller and Dick Earle were professionally qualified to be electronics chief of Pegasus. But of course professional qualifications aren't everything. Miller was not well liked. Earle was given the assignment because it was thought he could do a better job of getting along with the staff."
"And Miller resented it," Rick said.