The Doctor and Romana are en route back to Gallifrey when something strange happens to the TARDIS. Though it takes time for them to realize it, the TARDIS has fallen through a kind of wormhole into the alternate universe of E-space. Instead of Gallifrey, the Doctor has arrived on Alzarius, a planet whose small humanoid population is threatened by the onset of a deadly mist. During the time of mistfall, legend has it that spiders emerge from the indigenous fruit and deadly creatures appear. A troubled kid named Adric is trapped outside during mistfall, but stumbles into the TARDIS and befriends the Doctor and Romana. The Doctor soon finds that the horrific creatures that roam Alzarius during mistfall are more closely related to the besieged humanoids than either party realizes.
written by Andrew Smith
directed by Peter Grimwade
music by Paddy Kingsland
Guest Cast: Richard Willis (Varsh), Bernard Padden (Tylos), June Page (Keara), James Bree (Nefred), Alan Rowe (Garif), Leonard Maguire (Draith), George Baker (Login), Tony Calvin (Dexeter), Norman Bacon (Marsh child), Andrew Forbes (Omril), Adrian Gibbs (Rysik), Barney Lawrence, Steve Kelly, Stephen Calcutt, Keith Guest, Graham Cole, James Jackson, Steven Watson (Marshmen)
Broadcast from October 25 through November 15, 1980
LogBook entry & review by Earl Green […]