- Broadcast: 21 June 2008
- Viewers: 8.09m
- Availability: DVD: Series 4 Volume 4
Donna’s entire world collapses, but there’s no sign of the Doctor. Instead, she finds help from a mysterious blonde woman – a traveller from a parallel universe. But, as Donna and Rose Tyler combine forces, are they too late to save the whole of creation from the approaching darkness?
Written by Russell T. Davies
Directed by Graeme Harper
The Doctor – David Tennant
Donna Noble – Catherine Tate
Billie Piper – Rose Tyler
Wilfred Mott – Bernard Cribbins
Sylvia Noble – Jacqueline King
Rocco Colasanto – Joseph Long
Capt. Magambo – Noma Dumezweni
Fortune Teller – Chipo Chung
Mooky Kahari – Marcia Lecky
Veena Brady – Suzann McLean
Alice Coltrane – Natalie Walter
Man In Pub – Neil Clench
UNIT Soldier – Clive Standen
Jival Chowdry – Bhasker Patel
Female Reporter – Catherine York
Morgernstern – Ben Righton
Spanish Maid – Loraine Velez
Studio News Reader – Jason Mohammad
Housing Officer – Sanchia McCormack
Soldier #1 – Lawrence Stevenson
Woman in Doorway – Terri-Ann Brumby
Trinity Wells – Lachele Carl
Soldier #2 – Paul Richard Biggin
Fortune Teller: "Turn right and never meet that man. Turn right and change the world!"
UNIT Soldier: "We found a body, sir. Over."
UNIT Command: "Is it him? Over."
UNIT Soldier: "I think so. He just didn’t make it out in time. The Doctor is dead. Must have happened too fast for him to regenerate."
Wilfred: " Labour camps… that’s what they called them the last time."
Donna: "Wha’d you mean?"
Wilfred: "It’s happening again…"
Rose: "Trust me we need The Doctor more than ever. I’ve been pulled across from a different universe because every single universe is in danger. It’s coming Donna. It’s coming from across the stars and nothing can stop it."
Donna: "What is?"
Rose: "The darkness."
Rose: "I’ve crossed too many different realities. Trust me, the wrong word in the wrong place can change an entire causal nexus."
Captain Mogambo: "She talks like that. A lot."
The Doctor: "Donna, what was her name?"
Donna:"But she told me, to warn you. She said two words..".
The Doctor: "What two words, what were they? What did she say?"
Donna: "…Bad Wolf."
Donna: "Doctor what is it, what’s Bad Wolf?"
The Doctor: "It’s the end of the universe!"
Billie Piper is re-added to the opening titles. Although Piper cameoed in Partners in Crime, The Sontaran Stratagem and Midnight, this is her first credited appearance since Doomsday.
The Doctor refers to "the Trickster", a powerful being who appeared in the Sarah Jane Adventures story Whatever Happened to Sarah Jane?
The tone ringing in the TARDIS at the end of the episode is the cloister bell, an alarm bell first heard in Logopolis in the classic series.
Chipo Chung (Fortune Teller) appeared in episode Utopia as Chantho.
Capt. Magambo (Noma Dumezweni) reprises the character in Planet of the Dead.