크레딧 출연 Jon Pertwee The Doctor Caroline John Liz Shaw Nicholas Courtney Brigadier Lethbridge-Stewart Ronald Allen Ralph Cornish John Abineri Carrington Robert Cawdron Taltalian Michael Wisher John Wakefield Cheryl Molineaux Miss Rutherford Ray Armstrong Grey Robert Robertson Collinson Ric Felgate Van Lyden / Alien Ambassador Dallas Cavell Quinlan Bernard Martin Control Room Assistant John Moreno Dobson James Haswell Corporal Champion Derek Ware UNIT Sergeant William Dysart Reegan Cyril Shaps Lennox Gordon Sterne Heldorf Steve Peters Alien Ambassador / Lefee Neville Simons Alien Ambassador / Michaels Max Faulkner UNIT Soldier John Lord Masters Tony Harwood Flynn John Levene Sergeant Benton James Clayton Private Parker Joanna Ross Control Room Assistant Carl Conway Control Room Assistant Roy Scammell Technician Peter Noel Cook Alien Space Captain Peter Halliday Aliens' Voices Geoffrey Beevers Private Johnson 스텝 Barry Letts Production Michael Ferguson Directing David Whitaker Writing Dudley Simpson Sound Delia Derbyshire Sound Christine Rawlins Costume & Make-Up Terrance Dicks Writing Ian Scoones Visual Effects Peter Day Visual Effects Brian Hodgson Crew Gordon Mackie Sound Brian Hiles Sound Tony Leggo Camera A.A. Englander Camera Don Godden Editing Chris Wimble Editing Ron Bowman Editing Dick Coles Art Ralph Walton Lighting Geoff Shaw Lighting Dave Sydenham Lighting