A young woman, Amy Greenwood, working for the Doshi property moguls is found dead in Maksim Bazhanov's apartment; Maksim is discovered to have been in a relationship with Yasmin Doshi.
When a Muslim cleric is shot dead on the steps of the high court, MI5 race to find out who is behind the killing. Uncovering an extremist Christian group that is determined to incite a race war, Adam must find a way to unravel the organisation before disaster strikes again.
The Doctor faces a dilemma in which saving the world may result in the death of Rose Tyler; terror emerges from underneath Torchwood Tower.
Caught in a parallel universe, the Doctor takes on an evil corporation that is paving the way for an invasion by the Cybermen.
London is being converted by the Cybermen, reducing the Doctor, Rose and Mickey to fugitives.