Colin Baker
The Doctor
Acting
Bonnie Langford
Mel Bush
Acting
Michael Jayston
The Valeyard
Acting
Lynda Bellingham
The Inquisitor
Acting
Honor Blackman
Professor Sarah Lasky
Acting
Michael Craig
Commodore Travers
Acting
Denys Hawthorne
Rudge
Acting
Yolande Palfrey
Janet
Acting
Malcolm Tierney
Doland
Acting
David Allister
Bruchner
Acting
Tony Scoggo
Grenville
Acting
Arthur Hewlett
Kimber
Acting
Simon Slater
Edwardes
Acting
Sam Howard
Atza
Acting
Leon Davis
Ortezo
Acting
Hugh Beverton
First Guard
Acting
Barbara Ward
Mutant / Ruth Baxter
Art
Mike Mungarvan
Duty Officer
Acting
Martin Weedon
Second Guard
Acting
Peppi Borza
First Vervoid
Acting
Bob Appleby
Second Vervoid
Acting