Jon Pertwee

The Doctor

Katy Manning

Jo Grant

Nicholas Courtney

Brigadier Lethbridge-Stewart

Richard Franklin

Captain Mike Yates

John Levene

Sergeant Benton

Roger Delgado

The Master

Stephen Thorne

Azal

Stanley Mason

Bok

Damaris Hayman

Miss Hawthorne

Don McKillop

Bert the Landlord

Rollo Gamble

Winstanley

Robin Wentworth

Prof. Horner

David Simeon

Alastair Fergus

James Snell

Harry

John Joyce

Garvin

Eric Hillyard

Dr. Reeves

Jon Croft

Tom Girton

Christopher Wray

PC Groom

Gerald Taylor

Baker's Man

Alec Linstead

Sgt. Osgood

John Owens

Thorpe

Matthew Corbett

Jones

Barry Letts

Writer

Christopher Barry

Director

Robert Sloman

Writer

Terrance Dicks

Script Editor

Barry Letts

Producer

Roger Ford

Production Design

Ralph Walton

Lighting Director

Jan Harrison Shell

Makeup Artist

Fred Hamilton

Camera Operator

Tony Millier

Sound

Peter Diamond

Fight Choreographer

Chris Wimble

Editor

Barbara Lane

Costume Design

Dick Manton

Sound

Peter Day

Visual Effects

Dudley Simpson

Original Music Composer

Delia Derbyshire

Theme Song Performance

Peter Grimwade

Production Assistant