The team must discover the identity of a murderer inside their own organization, when the body of a Tech is discovered. Mike and Sarah have their own concerns when they are stranded on a commercial flight and KITT's self-destruct program has been initiated.
- KITT: I believe I've discovered why Dr. Graiman uploaded the self-destruct into me. Dr. Graiman is concerned that I may develop the ability to self-program.
Sarah: KITT, self-programming's not possible.
KITT: It was possible in my original prototype.
Mike: What prototype? I thought you were a one-of-a-kind.
Sarah: Yeah, KITT, what are you talking about?
KITT: I'm talking about KARR, Sarah.
Mike: There's another Mustang out there and its named car?
KITT: Not c-a-r, Michael. K-A-R-R. Knight Auto-Cybernetic Roving Robotic-Exoskeleton. And he was not a Mustang. He was a cybernetic exoskeleton programmed for self-preservation.
Mike: A killer robot.
KITT: By the time he was decommissioned, he was more cyborg than robot.
Mike: You wouldn't happen to have a picture of this thing, would you?
(KITT shows plans of KARR's schematics on view screen)
Mike: Wow. And I thought you were cool, KITT.