Doctor Who Guide: The Invisible Enemy

Last updated 09 January 2020

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Part Two

Series Episode Number: 459

World Premiere: Sat 8 Oct 1977 - 6:04pm BST [BBC One] (United Kingdom)
First Broadcast: Wed 11 Jun 1980 - 5:30pm CDT [WTTW 11 Chicago]
Running Time: 25 minutes 13 seconds

7.30 Million (UK)

Chart Position: 55 () (UK)

Recorded on Sun 10 Apr 1977 in TC6

As the Doctor's condition worsens, he instructs Leela to pilot the TARDIS to the Bi-Al Foundation. The only chance of curing the Doctor is to literally get inside his head.

Characters hide uncredited
Doctor Who		Tom Baker
Leela		Louise Jameson
Professor Marius		Frederick Jaeger
Lowe		Michael Sheard
Safran		Brian Grellis
Parsons		Roy Herrick
Marius' Nurse		Elizabeth Norman
Reception Nurse		Nell Curran
Voice of K-9		John Leeson
Nucleus Voice		John Leeson
Opthalmologist		Jim McManus
Cruikshank		Roderick Smith
Hedges		Kenneth Waller
Bi-Al Member		Leslie Bates (uncredited)
Bi-Al Member		Alan Clements (uncredited)
Bi-Al Member		Derek Hunt (uncredited)
Bi-Al Member		Ken Sedd (uncredited)
Bi-Al Member		Cy Town (uncredited)
Bi-Al Member		Margot Gordon (uncredited)

Production Team include uncredited
Writer		Bob Baker
Writer		Dave Martin
Director		Derrick Goodwin
Producer		Graham Williams
Designer		Barry Newbery
Script Editor		Robert Holmes
Costume Designer		Raymond Hughes
Make-up Artist		Maureen Winslade
Visual Effects Designer		Ian Scoones
Visual Effects Designer		Tony Harding
Film Cameraman		Nick Allder
Studio Lighting		Brian Clemett
Studio Sound		Michael McCarthy
Production Assistant		Norman Stewart
Production Unit Manager		John Nathan-Turner
Incidental Music		Dudley Simpson
Special Sound		Dick Mills

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Horror of Fang Rock

Image of the Fendahl

Part Two

7.30 Million (UK)

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