As scientist Danny Llewellyn (Daniel Evans), leader of the Guinevere project, reports, the probe will soon send back photographs of the Martian surface. But Guinevere won't be snapping photos of Mars any time soon; it encounters a massive space-borne craft, vaguely shaped like an asteroid, which sucks it inside. Guinevere later broadcasts pictures of an alien race whose language is unfamiliar, setting all of Earth on alert and drawing Harriet Jones (Penelope Wilton), the new Prime Minister of Britain, to the headquarters of UNIT to investigate.

Harriet's aide, Alex (Adam Garcia), works on a translator code to understand the aliens, while Major Blake (Chu Ornambala) of UNIT tells her that "Torchwood," a secret project, can soon be ready; Harriet, meanwhile, wonders where the Doctor is, and why he hasn't appeared to help.

Cast

This episode was the first one to feature David Tennant as the new Doctor and also featured Billie Piper (Rose Tyler), Camille Coduri (Jackie Tyler), Noel Clarke (Mickey Smith), Penelope Wilton (Harriet Jones), and Daniel Evans (Danny Llewellyn).

This episode was first transmitted in the UK on 25th December 2006

DR WHO NEWS

The Christmas Invasion Special episode of Doctor Who, featuring Adam Garcia, will be aired in the US on the SciFi Channel on Friday evening September 29, according to the Chicago Tribune. This 2 hour special kicks off Season 2 of the new Who in the States.