Thunderbirds: The Perils of Penelope

Lady Penelope goes on the trail of a kidnapped scientist, only to find herself in mortal danger at the hands of a megalomaniac determined to exploit the expert's work to his advantage.

• Director: Alan Pattillo
• Cast: Sylvia Anderson, Peter Dyneley, Shane Rimmer, David Holliday, Matt Zimmerman, David Graham, Ray Barrett, Christine Finn