Part Four
Series Episode Number: 525World Premiere: Sat 12 Jan 1980 - 6:06pm GMT [BBC One] (United Kingdom)
Running Time: 26 minutes 45 seconds
10.40 Million (UK)
Appreciation Index: 67 (UK)Chart Position: 26 () (UK)
On the dying world of Crinoth, Romana discovers the truth behind the Nimon's empty promises. The Doctor must find a way to shut down the power complex on Skonnos.