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?
Sheila Dunn, director Douglas Camfield's wife, who was the voice of the computer in episode 1, is the telephone operators voice in this episode. 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