Reviews in Time & Space: The Zygon Invasion
Despite having only appeared in one story in the classic series its amazing how the Zygons have stood the test of time to become one of Doctor Who's more memorable monsters. Their appearance in 50th anniversary special The Day of the Doctor was a nice way of bringing them forward into the modern era, however there was a bit too much going on in that episode to really give them the focus they deserved. However the episode sowed the seeds for The Zygon Invasion , the first of a two part story which also addresses another plot point that has arisen since then. Written by Peter Harness (who also wrote last year's Kill the Moon ), this episode also sees the return of Osgood - the UNIT scientist with a penchant for dressing up in the Doctor's old wardrobes.