Part Four
Series Episode Number: 657World Premiere: Mon 28 Sep 1987 - 7:35pm BST [BBC One] (United Kingdom)
First Broadcast: Fri 19 Jun 2015 - 8:30pm EDT [Retro TV]
Running Time: 24 minutes 38 seconds
4.90 Million (UK)
Appreciation Index: 59 (UK)Chart Position: 86 () (UK)
Recorded on Mon 04 May 1987 in Television Centre 1
As Mel convinces the Lakertyans fight back, the Tetraps turn on the Rani and the Doctor ensures the missile is deflected away from the asteroid.
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