Last updated 09 January 2020


Part One

Series Episode Number: 492

World Premiere: Sat 25 Nov 1978 - 6:22pm GMT [BBC One] (United Kingdom)
First Broadcast: Sun 13 Sep 1981 - 11:00pm CDT [WTTW 11 Chicago]
Running Time: 24 minutes 53 seconds

8.50 Million (UK)


Chart Position: 45 () (UK)

Recorded on Mon 14 Aug 1978 in Television Centre 6



The Doctor's search for the Key to Time continues when the tracer brings the TARDIS to the planet Tara. 

Romana quickly finds the fourth segment disguised as part of a statue but is then taken prisoner by Count Grendel of Gracht who has desires on the Taran throne and who is astounded to see she's the identical double of the Princess Strella,


Production Team hide uncredited
WriterDavid Fisher
DirectorMichael Hayes
ProducerGraham Williams
DesignerValerie Warrender
Script EditorAnthony Read
Studio LightingBrian Clemett
Studio SoundRichard Chubb
Costume DesignerDoreen James
Make-up ArtistJill Hagger
Visual Effects DesignerLen Hutton
Electronic Effects OperatorA J Mitchell
Videotape EditorAlan Goddard
Film CameramanJohn Walker
Film RecordistDon Lee
Film EditorDavid Yates
Production AssistantTeresa-Mary Winders
Production Unit ManagerJohn Nathan-Turner
Incidental MusicDudley Simpson
Special SoundDick Mills
Fight ArrangerTerry Walsh (uncredited)
Title MusicRon Grainer (uncredited)
Assistant Floor ManagerRosemary Webb (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Title SequenceBernard Lodge (uncredited)
Title Music BBC Radiophonic Workshop (uncredited)