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Classic Who S16 • Serial 5 · (4 episodes)

The Power of Kroll

2.75/ 5 183 votes

First aired Saturday, December 23, 1978
Production Code 5E
Written by Robert Holmes
Directed by Norman Stewart
Runtime 100 minutes
Time Travel Future
Story Arc: (Potential Spoilers!) The Key to Time
Locations Delta III
Synopsis

The Fourth Doctor and Romana I arrive on the marsh moon of Delta Magna in search of the fifth segment of the Key to Time. They are caught in the conflict between the native Swampies and the crew of a chemical refinery. The presence of a gun runner complicates matters; to make things worse, the Swampies intend to awaken Kroll, the giant god that lives beneath the swamps.

4 Episodes:

First aired Saturday, December 23, 1978
Runtime 25 minutes
Written by Robert Holmes
Directed by Norman Stewart
UK Viewers 6.5 million

Synopsis

The Third Moon of Delta Magna, The Future. The Doctor and Romana arrive in search of the fifth segment and are immediately swept up in a conflict between the crew of a new refinery and the embittered natives…

First aired Saturday, December 30, 1978
Runtime 25 minutes
Written by Robert Holmes
Directed by Norman Stewart
UK Viewers 12.4 million

Synopsis

The Doctor and Romana try to avoid being sacrificed to Kroll – just in time for the real monster to appear.

First aired Saturday, January 6, 1979
Runtime 25 minutes
Written by Robert Holmes
Directed by Norman Stewart
UK Viewers 8.9 million

Synopsis

The massive Kroll is awake and killing anyone in its path. And the swampies are determined to appease it – by sacrificing the Doctor and Romana.

First aired Saturday, January 13, 1979
Runtime 25 minutes
Written by Robert Holmes
Directed by Norman Stewart
UK Viewers 9.9 million
Appreciation Index 63

Synopsis

The Doctor and Romana are trapped between the monstrous Kroll and the insane refinery commander. And there is no sign of the fifth segment of the Key to Time.

Ratings are from TARDIS Guide members only.

Other adaptations of this story: