The Doctor and Jamie enlist the help of UNIT to rescue Zoe and Isobel before trying to find out what Vaughn is really up to.
Did You Know?
This episode was wiped by the BBC and no copy of it is known to exist. Off-air audio recordings by fans and the original shooting script were used to recreate an animated version to complete the story for DVD release. See more
Zoe States they saw a space ship on the other side of the moon when they didn't this was corrected in the animated reconstruction. See more
Referenced in Evolution of the Invasion