Doctor Who: The Zygon Who Fell To Earth
by Paul Magrs (Big Finish, 2008)
A pleasantly small-scale invasion story with a focus on relationships, humbugged somewhat by overtly manipulative, aggressively heart-rending incidental music. Steven Pacey is a welcome addition to the voice cast, as is Tim Brooke-Taylor in his one, gloriously understated appearance for Big Finish.
Dr. Eleventh
by Adam Hargreaves (BBC, 2017)
Hargreaves, in his usual clumsy way, has Matt Smith’s Doctor and River Song run a pointless gamut of monsters… but can only think of three (Zygons, Silurians, Weeping Angels) before resorting to snakes and spiders! The ending is as tiresome as ever.
Doctor Who: Terror of the Zygons
by Robert Banks Stewart; dir. Douglas Camfield (BBC, 1975)
The Zygons engineer a creature that can withstand nuclear weaponry, but themselves are one of the few aliens not impervious to UNIT bullets. Dynamically directed with plenty of location filming and lush, organic sets, Terror sadly peters out to become Sock Puppet.