导演 Michael Ferguson

The Doctor Jon Pertwee

Liz Shaw Caroline John

Brigadier Lethbridge-Stewart Nicholas Courtney

Ralph Cornish Ronald Allen

Carrington John Abineri

Taltalian Robert Cawdron

John Wakefield Michael Wisher

Miss Rutherford Cheryl Molineaux

Grey Ray Armstrong

Collinson Robert Robertson

Van Lyden / Alien Ambassador Ric Felgate

Quinlan Dallas Cavell

Control Room Assistant Bernard Martin

Dobson John Moreno

Corporal Champion James Haswell

UNIT Sergeant Derek Ware

Reegan William Dysart

Lennox 西里尔·谢普斯

Heldorf Gordon Sterne

Alien Ambassador / Lefee Steve Peters

Alien Ambassador / Michaels Neville Simons

UNIT Soldier Max Faulkner

Masters John Lord

Flynn Tony Harwood

Sergeant Benton John Levene

Private Parker James Clayton

Control Room Assistant Joanna Ross

Control Room Assistant Carl Conway

Technician Roy Scammell

Alien Space Captain Peter Noel Cook

Aliens' Voices Peter Halliday

Private Johnson Geoffrey Beevers