'Mouth of the Snake' (a.k.a. 'All That Glitters') by Robert Foster and Robert W. Gilmer

The Foundation is contacted by Joanna St. John, who asks for help in investigating the death of her husband, Arthur Abrams, a prominent federal lawyer who was murdered in a shootout at the Mexican border. The only clue Joanna has is a note scrawled by Abrams: ‘Boca Culebra’ – Mouth of the Snake. When Michael and K.I.T.T. are assigned to help, they team up with highly-trained government agent David Dalton and uncover a plot involving a fortune in gold, a stolen state-of-the-art rocket launcher and wealthy arms-dealer Eduardo O'Brian…

David Hasselhoff (Michael Knight), William Daniels (K.I.T.T. [Voice]), Edward Mulhare (Devon Miles), Rebecca Holden (April Curtis), Joanna Pettet (Joanna St. John), Charles Taylor (David Dalton), George Murdock (Archibald Hendley), Patty Kotero (Tiara D'Arcy), Pedro Armendariz Jr. (Eduardo O'Brian), Emily Banks (Pricilla Ragsdale), Robert Clarke (John Ragsdale), Chuck Lindsly (Steward), Luis Contreras (Coyote), Arell Blanton (Frank), Tom Gilleran (Arthur Abrams), Todd Martin (Elmo Elliott), Robert Colbert (Elton Mathews), Alan Graff (Highway Patrolman), Vance David (Security Man), Rick Holly (Pilot), Joel Kramer (Commando # 1), Spike Silver (Commando # 2), Mario Roberts (Commando # 3), Rick Avery (Commando # 4), John Sherrod (Truck Driver # 1), Jeff Jensen (Truck Driver # 2), Kenny Rossall (Van Driver # 1)

Directed by Winrich Kolbe
Produced by Robert Ewing

TX (US): 8th April 1984

Notes:
*Featuring Michael Knight, Devon Miles, April Curtis and K.I.T.T.

*This is a double-length episode

*Working title: 'All That Glitters'

*The story also served as the pilot for the short-lived series 'Code of Vengeance', centred around the exploits of Vietnam veteran David Dalton; unfortunately, it only lasted five episodes...