Bad Wolf

166a – "Bad Wolf"
166a – "Bad Wolf"
Doctor Who episode
Cast
	Doctor Christopher Eccleston – Ninth Doctor;
	Companions Billie Piper – Rose Tyler; John Barrowman – Jack Harkness;
	Others Jo Joyner – Lynda Moss; Jamie Bradley – Strood; Abi Eniola – Crosbie; Davina McCall – Voice of Davinadroid; Paterson Joseph – Rodrick; Jenna Russell – Floor manager; Anne Robinson – Voice of Anne Droid; Trinny Woodall – Voice of Trine-E; Susannah Constantine – Voice of Zu-Zana; Jo Stone-Fewings – Male programmer; Nisha Nayar – Female programmer; Dominic Burgess – Agorax; Karren Winchester – Fitch; Kate Loustau – Colleen; Sebastian Armesto – Broff; Martha Cope – Controller; Sam Callis – Security guard; Alan Ruscoe, Paul Kasey – Androids; Barnaby Edwards, Nicholas Pegg, David Hankinson – Dalek Operators; Nicholas Briggs – Dalek voice;
Production
Directed by	Joe Ahearne
Written by	Russell T Davies
Script editor	Helen Raynor
Produced by	Phil Collinson
Executive producer(s)	Russell T Davies; Julie Gardner; Mal Young;
Music by	Murray Gold
Production code	1.12
Series	Series 1
Running time	1st of 2-part story, 45 minutes
First broadcast	11 June 2005
Chronology
← Preceded by; "Boom Town"	Followed by →; "The Parting of the Ways"
	List of episodes (2005–present)

"Bad Wolf" is the twelfth episode of the revived first series of the British science fiction television series Doctor Who. The episode was first broadcast on BBC One on 11 June 2005. It is the first of a two-part story. The concluding episode, "The Parting of the Ways", was first broadcast on 18 June 2005.

In the episode, set in the far future 100 years after the events of "The Long Game", the Ninth Doctor (Christopher Eccleston) and his travelling companions Rose Tyler (Billie Piper) and Captain Jack Harkness (John Barrowman) are secretly brought on board the game-show-broadcasting satellite, Satellite Five, by its controller (Martha Cope) so they can fight against the controller's "masters", the Daleks.

This episode is the first in the Series to begin providing answers on the Series wide story arc "Bad Wolf", even using the phrase as its title. It also shows several instances of where the phrase was hidden in previous episodes.

This is also the first Story in the Revived series to mention "Torchwood", described here as an old earth institute. An acronym of "Doctor Who", it was used as a temporary cover title during production to avoid spoilers. And was initially placed in this episode as a nod to that. However, the Torchwood institute would later become part of the Series wide Story arc for Series 2, effectively serving as Series 2's "Bad Wolf".