Cast
Jon Pertwee
The Doctor
Roger Delgado
The Master
Katy Manning
Jo Grant
Edwin Richfield
Captain Hart
Clive Morton
Trenchard
June Murphy
3rd Officer Jane Blythe
Donald Sumpter
Commander Ridgeway
David Griffin
Lt. Commander Mitchell
Hugh Futcher
Hickman
Royston Tickner
Robbins
Pat Gorman
Sea Devil
Peter Forbes-Robertson
Chief Sea Devil
Declan Mulholland
Clark
Alec Wallis
Ldg. Telegraphist Bowman
Brian Justice
Castle Guard Wilson
Terry Walsh
Castle Guard Barclay
Eric Mason
C.P.O. Smedley
Christopher Wray
Ldg. Seaman Lovell
Stanley McGeagh
Castle Guard Drew
Brian Vaughan
Lt. Commander Watts
Martin Boddey
Walker
Crew
Directing
Michael E. Briant
Director
Editing
Martyn Day
Editor
Lighting
Mike Jefferies
Lighting Director
Production
Barry Letts
Producer
Sound
Malcolm Clarke
Original Music Composer
Delia Derbyshire
Theme Song Performance
Tony Millier
Sound
Colin Dixon
Sound
Visual Effects
Peter Day
Visual Effects
