Last updated 24 March 2024


Part One

Series Episode Number: 428

World Premiere: Sat 4 Sep 1976 - 6:12pm BST [BBC One] (United Kingdom)
First Broadcast: Mon 5 May 1980 - 5:30pm CDT [WTTW 11 Chicago]
Running Time: 24 minutes 31 seconds

8.30 Million (UK)

Appreciation Index: 58 (UK)

Chart Position: 40 () (UK)

Recorded on Mon 03 May 1976 in TC3



The Doctor and Sarah arrive in Renaissance Italy unaware that they have brought a deadly alien energy force with them.


Production Team hide uncredited
WriterLouis Marks
DirectorRodney Bennett
ProducerPhilip Hinchcliffe
DesignerBarry Newbery
Script EditorRobert Holmes
Costume DesignerJames Acheson
Make-up ArtistJan Harrison
Film CameramanJohn Baker
Film RecordistHugh Cleverley
Film EditorClare Douglas
Studio LightingDennis Channon
Studio SoundColin Dixon
Special SoundDick Mills
Visual Effects DesignerIan Scoones
Title SequenceBernard Lodge
Production Unit ManagerChris D'Oyly-John
Production AssistantThea Murray
Incidental MusicDudley Simpson
Title MusicRon Grainer
and the BBC Radiophonic Workshop
Assistant Floor ManagerLinda Graeme (uncredited)
Floor AssistantJim Burge (uncredited)
Technical ManagerHenry Barber (uncredited)
Vision MixerGraham Giles (uncredited)
Grams OperatorDon Slater (uncredited)
Senior CameramanPeter Grainger (uncredited)
Back ProjectionJohn Hickman (uncredited)
Film Operations ManagerIan Brindle (uncredited)
Effects AssistantKen Bomphray (uncredited)
Inlay OperatorDave Chapman (uncredited)
Film Sound AssistantTerry Elms (uncredited)
Make-Up AssistantCarolyn Buisuinne (uncredited)
Make-Up AssistantHadsera Coovadia (uncredited)
Design AssistantLes McCallum (uncredited)
Design AssistantJohn Neild (uncredited)
Facilities BookingsJennie Betts (uncredited)
ArmourerAlf Trustrum (uncredited)
ArmourerJack Wells (uncredited)
Make Up AssistantVivian Riley (uncredited)
DraughtsmanGrace Bryan-Brown (uncredited)
DraughtsmanShelagh Lawson (uncredited)
Artist BookingNansi Davies (uncredited)
Post Production Grams OperatorGordon Phillipson (uncredited)
Director's AssistantHazel Marriott (uncredited)
DresserMervin Bezar (uncredited)
DresserMichael Purcell (uncredited)
DresserTessa Spendlove (uncredited)
Props BuyerRoger Wood (uncredited)
Props BuyerVal Woodford (uncredited)
Production SecretaryAnn Rickard (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)