Air Date: February 3, 1985
Writer: Valvin Clements Jr. (credited as Calvin Clements Jr.)
Director: Georg Fenady
Production Code: 58641

Plot Summary

Michael investigates illegal toxic waste dumping by a businessman known as "Acid" John Birock (Ramon Bieri). The environmental polluter has been secretly dumping chemicals that are killing wildlife and contaminating groundwater. During a nighttime raid on Birock's chemical dump, KITT is captured by a massive custom truck—the "Junk Yard Dog"—and dropped into a pit of corrosive acid.

The damage is catastrophic. KITT's molecular bonded shell is compromised, his circuits are fried, and only the chassis remains. Bonnie admits she may not be able to repair him, especially without the Foundation's full facilities. Devon makes the decision to call in the original design team: Dr. Von Voorman, Dr. Breland, and Dr. Numata—the scientists who originally built KITT under Wilton Knight.

The original team rebuilds KITT from scratch, but there's a problem: the car has lost his confidence. He's hesitant, uncertain, and afraid. In a moving sequence, Michael helps KITT work through his fears, telling him: "You're the best there is. You're KITT." Together, they confront "Acid" John Birock one final time—KITT regaining his nerve to save the day.

Why This Episode Is Iconic

This episode stands out for several reasons:

• KITT at his most vulnerable: Unlike other destructions (which happen quickly), we see KITT literally dissolving in acid. The visual of his once-proud form reduced to bare metal is startling.
• Emotional stakes for a machine: The show takes the unusual step of exploring KITT's psychological state after trauma. His loss of confidence feels genuine, not just a plot device.
• The "white undercoat": This is the first time we see KITT in his white undercoat during reconstruction—a visual that would recur in "Knight of the Juggernaut."
• Environmental message: The episode delivers an environmental message about toxic waste dumping, which was relatively rare for mainstream TV in 1985.

Guest Stars

• Dr. Von Voorman: Curt Lowens
• "Acid" John Birock: Ramon Bieri
• Fran: Heather McNair
• Tori: Kathy Shower

Production Notes

• Filmed: December 13-21, 1984
• Rerun: August 9, 1985
• The original script had Michael reaching for KITT's voice box, which crumbled at his touch—but this was changed because touching the potentially toxic car would be dangerous.

Sources

• Knight Rider Archives
• IMDb
• Knight Rider Fandom Wiki
• TVmaze