Colin Baker
The Doctor
Colin Baker
The Doctor
Bonnie Langford
Mel Bush
Michael Jayston
The Valeyard
Lynda Bellingham
The Inquisitor
Honor Blackman
Professor Sarah Lasky
Michael Craig
Commodore Travers
Denys Hawthorne
Rudge
Yolande Palfrey
Janet
Malcolm Tierney
Doland
David Allister
Bruchner
Tony Scoggo
Grenville
Arthur Hewlett
Kimber
Simon Slater
Edwardes
Sam Howard
Atza
Leon Davis
Ortezo
Hugh Beverton
First Guard
Barbara Ward
Mutant / Ruth Baxter
Mike Mungarvan
Duty Officer
Martin Weedon
Second Guard
Peppi Borza
First Vervoid
Bob Appleby
Second Vervoid
Chris Clough
Director
Jane Baker
Writer
Pip Baker
Writer
John Nathan-Turner
Producer
John Nathan-Turner
Script Editor
Malcolm Clarke
Original Music Composer
Alec Wheal
Camera Supervisor
Andrew Rose
Costume Design
Dinah Walker
Production Design
Shaunna Harrison
Makeup Artist
Jane Wellesley
Production Assistant
Ian Fraser
Production Manager
Dick Mills
Special Sound Effects
Don Babbage
Lighting Director
Brian Clark
Sound
Danny Popkin
Visual Effects
Hugh Parson
Editor
Kevin Molloy
Visual Effects