The Fires of Pompeii

"The Fires of Pompeii" is the second episode of the fourth series of the British science fiction television series Doctor Who. It was broadcast on BBC One on 12 April 2008. Set shortly before and during the eruption of Mount Vesuvius in AD 79, this episode depicts alien time traveller the Doctor (David Tennant) and his new companion Donna Noble (Catherine Tate) on a trip to Pompeii, where they uncover an alien invasion. Their clashing worldviews present an ethical dilemma for the Doctor.