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.


Characters hide uncredited
Doctor WhoTom Baker
Sarah Jane SmithElisabeth Sladen
Count FedericoJon Laurimore
Captain RossiniAntony Carrick
GiulianoGareth Armstrong
MarcoTim Pigott-Smith
HieronymousNorman Jones
High PriestRobert James
BrotherBrian Ellis
SoldierPat Gorman
Federico's servantGeorge Ballantine (uncredited)
Giuliano's ServantDavid Glynn Rogers (uncredited)
CourtierDavid Rolfe (uncredited)
CourtierLincoln Wright (uncredited)
CourtierLionel taylor (uncredited)
CourtierDavid Wilde (uncredited)
CourtierGavin Ianson (uncredited)
CourtierKen Tracey (uncredited)
CourtierRoy Pearce (uncredited)
CourtierPaul Barton (uncredited)
Old DukeMichael Mulcaster (uncredited)
PriestMaurice Quick (uncredited)
Soldier (San Martino)Dennis Plenty (uncredited)
Soldier (San Martino)Leslie Weekes (uncredited)
Soldier (San Martino)Walter Henry (uncredited)
Soldier (San Martino)Christopher Holmes (uncredited)
Soldier (San Martino)Clinton Morris (uncredited)
Soldier (San Martino)Mary Rennie (uncredited)
Soldier (San Martino)Penny Lambirth (uncredited)
ExecutionerTerry Walsh (uncredited)