Last updated 09 January 2020

Part One

Part One

Series Episode Number: 689

World Premiere: Wed 25 Oct 1989 - 7:34pm BST [BBC One] (United Kingdom)
First Broadcast: Sun 1 Sep 1996 - 11:00pm CDT [WTTW 11 Chicago]
Running Time: 24 minutes 23 seconds

4.30 Million (UK)

Appreciation Index: 67 (UK)

Chart Position: 104 () (UK)

As Russian forces approach the English coastline, an ancient evil stirs beneath the surface of the water. For Ace and the Doctor, a deadly game of revenge has begun