Last updated 24 March 2024


Part Four

Series Episode Number: 657

World Premiere: Mon 28 Sep 1987 - 7:35pm BST [BBC One] (United Kingdom)
First Broadcast: Fri 19 Jun 2015 - 8:30pm EDT [Retro TV]
Running Time: 24 minutes 38 seconds

4.90 Million (UK)

Appreciation Index: 59 (UK)

Chart Position: 86 () (UK)

Recorded on Mon 04 May 1987 in Television Centre 1



As Mel convinces the Lakertyans fight back, the Tetraps turn on the Rani and the Doctor ensures the missile is deflected away from the asteroid.


Characters hide uncredited
The DoctorSylvester McCoy
MelanieBonnie Langford
The RaniKate O'Mara
IkonaMark Greenstreet
BeyusDonald Pickering
FaroonWanda Ventham
UrakRichard Gauntlett
Special VoicePeter Tuddenham
Special VoiceJacki Webb
Albert EinsteinTom O'Leary (uncredited)
TetrapChris Chering (confirmed)
GeniiChristopher Holmes (uncredited)
GeniiDavid Ianson (uncredited)
GeniiCenydd Joeenz (uncredited)
GeniiHelen Garton (uncredited)
GeniiKaren England (uncredited)
GeniiIan Durrant (uncredited)
GeniiAndrew James (uncredited)
GeniiTony Randall (uncredited)
LakertyanPenny Rigden (uncredited)
LakertyanTrisha Clarke (uncredited)
LakertyanSara Wishart (uncredited)
LakertyanMandy Lesley (uncredited)
LakertyanSuzanne Britten (uncredited)
LakertyanAmanda Grey (uncredited)
LakertyanJune Bishop (uncredited)
LakertyanChristine Charlesworth (uncredited)
LakertyanAmanda J Beard (uncredited)
LakertyanDebbie Lamb (uncredited)
LakertyanHelena Richards (uncredited)
LakertyanCheryl Carroll (uncredited)
Tetrap/Lakertyan/GeniiSteve Rome (uncredited)
Tetrap/Lakertyan/GeniiMike Mungarvan (uncredited)
Tetrap/Lakertyan/GeniiJoseph Arland (uncredited)
Tetrap/Lakertyan/GeniiPaul Cottingham (uncredited)
Tetrap/Lakertyan/GeniiRussell Brook (uncredited)
Tetrap/Lakertyan/GeniiDaryl Brook (uncredited)
Tetrap/Lakertyan/GeniiRoss Murray (uncredited)
Tetrap/Lakertyan/GeniiOscar Peck (uncredited)
Tetrap/Lakertyan/GeniiAndrew Woodman (uncredited)
Tetrap/Lakertyan/GeniiRicardo Mulhall (uncredited)
Tetrap/Lakertyan/GeniiLea Derek (uncredited)
Tetrap/Lakertyan/GeniiPaul Page-Hanson (uncredited)
Tetrap/Lakertyan/GeniiMark Carroll (uncredited)
Tetrap/Lakertyan/GeniiPaul Goddard (uncredited)
Tetrap/Lakertyan/GeniiHayden Andrews (uncredited)
Tetrap/Lakertyan/GeniiMicky Max (uncredited)
Tetrap/Lakertyan/GeniiChristopher Mosque (uncredited)
Tetrap/Lakertyan/GeniiChris Rainbow (uncredited)
Tetrap/Lakertyan/GeniiPeter Fenton (uncredited)
Tetrap/Lakertyan/GeniiJosh Elwell (uncredited)
Tetrap/Lakertyan/GeniiPhilip Babut (uncredited)
Tetrap/Lakertyan/GeniiJames Woodward (uncredited)
Tetrap/Lakertyan/GeniiTony White (uncredited)
Production Team
WriterPip Baker
WriterJane Baker
DirectorAndrew Morgan
ProducerJohn Nathan-Turner
DesignerGeoff Powell
Script EditorAndrew Cartmel
Graphic DesignerOliver Elmes
Costume DesignerKen Trew
Make-up DesignerLesley Rawstorne
Studio LightingHenry Barber
Studio SoundBrian Clark
Technical CoordinatorRichard Wilson
Studio Camera SupervisorAlec Wheal
Videotape EditorHugh Parson
Visual Effects DesignerColin Mapson
Video EffectsDave Chapman
Vision MixerSue Thorne
Film CameramanWilliam Dudman
OB LightingIan Dow
OB SoundDoug Whittaker
OB CamermanAlisdair Mitchell
OB CamermanJohn Hawes
Production ManagerTony Redston
Production AssociateAnn Faggetter
Production AssistantJoy Sinclair
Assistant Floor ManagerJoanna Newbery
Assistant Floor ManagerChristopher Sandeman
Title MusicRon Grainer
Title Music ArrangerKeff McCulloch
Incidental MusicKeff McCulloch
Special SoundDick Mills