When the Doctor brings Ace back in time to an old mansion she previously burned down, the pair discovery a greater mystery waiting for them below…

Fear and loathing in Perivale:
The Doctor, so Ace thinks, has tricked her into returning to the house of Gabriel Chase in Perivale, near London. It turns out that Ace had visited the house in 1983 and had felt an evil presence, and the Seventh Doctor's curiosity drives him to seek the answers. What is the nature of the horror that Ace sensed here when she was thirteen?

Primordial Soup:
The Doctor and Ace are in the old house, Gabriel Chase but things are all to frighteningly familiar for Ace to deal with.

LinkCredit: BBC Worldwide