Tom Baker

The Doctor

Louise Jameson

Leela

Colin Douglas

Reuben / Rutan (voice)

John Abbott

Vince Hawkins

Ralph Watson

Ben

Sean Caffrey

Lord Palmerdale

Alan Rowe

Colonel Skinsale

Annette Woollett

Adelaide

Rio Fanning

Harker

Paddy Russell

Director

Terrance Dicks

Writer

Graham Williams

Producer

Dudley Simpson

Original Music Composer

Robert Holmes

Script Editor

Peter Grimwade

Production Assistant

Delia Derbyshire

Theme Song Performance