Last updated 24 March 2024


Part One

Series Episode Number: 392

World Premiere: Sat 8 Mar 1975 - 5:30pm GMT [BBC One] (United Kingdom)
First Broadcast: Tue 11 Mar 1980 - 5:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 20 seconds

10.70 Million (UK)


Chart Position: 23 () (UK)

Recorded on Mon 27 Jan 1975 in TC1



The Time Lords send the Doctor, Sarah and Harry to Skaro at a point in time shortly before the creation of the Daleks. The Doctor's mission is to destroy his greatest enemy.


Characters hide uncredited
Doctor WhoTom Baker
Sarah Jane SmithElisabeth Sladen
Harry SullivanIan Marter
DavrosMichael Wisher
NyderPeter Miles
GharmanDennis Chinnery
RavonGuy Siner
Time LordJohn Franklyn-Robbins
Kaled LeaderRichard Reeves
Dalek OperatorJohn Scott Martin
Stunt ManAlan Chuntz (uncredited)
Stunt ManTerry Walsh (uncredited)
Kaled BoyPaul Burton (uncredited)
KaledTony O'Keefe (uncredited)
KaledStephen Butler (uncredited)
KaledMichael Bunker (uncredited)
ThalDougal Rossiter (uncredited)
ThalJulian Peters (uncredited)
ThalKeith Klugston (uncredited)
Kaled SoldierPeter Kodak (uncredited)
Kaled SoldierGiles Melville (uncredited)
Guard (Elite)Barry Summerford (uncredited)
Guard (Elite)Bob Watson (uncredited)
Kaled CouncillorAnthony Lang (uncredited)
MutoMichael Crane (uncredited)
MutoJohn Sowerbutt (uncredited)
MutoChristopher Holmes (uncredited)
Dead SoldierPeter Duke (uncredited)
SoldierDavid Billa (uncredited)
SoldierBindya Solanki (uncredited)
SoldierTim Blackstone (uncredited)
SoldierJulian Hudson (uncredited)