|182b – "Evolution of the Daleks"|
|Doctor Who episode|
|Directed by||James Strong|
|Written by||Helen Raynor|
|Script editor||Lindsey Alford|
|Produced by||Phil Collinson|
|Executive producer(s)||Russell T Davies|
|Music by||Murray Gold|
|Running time||2nd of 2-part story, 45 minutes|
|First broadcast||28 April 2007|
"Evolution of the Daleks" is the fifth episode of the third series of the revived British science fiction television series Doctor Who. It was first broadcast on BBC One on 28 April 2007, and is the conclusion of the two-part story begun in "Daleks in Manhattan" on 21 April.
The episode is set in New York City in 1930. In the episode, Dalek Sec (Eric Loren) of the Cult of Skaro attempts to make further alterations to his human test subjects he intends to remake into a new race of Daleks as part of his species' evolution. Sec is betrayed by his fellow Daleks for doing this.
After the creation of the hybrid Dalek-human, the Tenth Doctor confronts the Cult of Skaro and helps Martha and Frank escape. As Dalek Sec begins experiencing emotions Dalek Caan and Dalek Jast discuss their lack of confidence in him. The Doctor and Martha return to Hooverville, which is attacked by the Daleks. Although Solomon is killed, Dalek Sec orders the Doctor to be brought to him alive.
At the Dalek lab at the Empire State Building, the Doctor learns that the Daleks are planning to combine their DNA with humans and create more hybrids. The process requires more energy than can be generated with the technology of 1930, so the Daleks plan to use gamma radiation from a solar flare. The Doctor agrees to help once he realises that the human subjects are already brain dead and cannot be saved otherwise. He also offers to take the new hybrids and the Daleks to a new planet so they can start over, to which Dalek Sec agrees. Daleks Caan, Jast, and Thay stage a mutiny, chaining up Dalek Sec and declaring him a traitor. The Daleks then decide to replace the human DNA completely with their own. The Doctor regroups with Martha, who has broken into the Empire State Building with Tallulah and Frank and analysed the building plans together. Martha tells the Doctor he must remove the Dalekanium panels on the mast of the building to stop the energy collection. The Doctor does not remove the Dalekanium in time and holds the mast as the strike hits. The energy flows down the building, awakening the new hybrids.
The Doctor returns to the theatre with the human-Dalek army following them in the sewers. In the theatre, the Doctor pleads with Daleks Thay and Jast to listen to Dalek Sec and let him help. They refuse, attempting to kill the Doctor but Sec steps in between and sacrifices himself. The Daleks order their army to kill the Doctor, but find that the humans are questioning orders. By exposing himself to the gamma strike, the Doctor caused some of his Time Lord DNA to transfer to the human shells. The army kill Thay and Jast. Dalek Caan activates a termination sequence to kill the rest of the army. Upset by this act of genocide, the Doctor returns to the Dalek lab to face Caan, but Caan escapes via temporal shift.
Laszlo begins to grow weak, as he and the other pig slaves (who were killed by Martha, Frank, and Tallulah using the lightning strike) have a lifespan of only a few weeks. The Doctor uses the technology left behind in the Daleks' lab to heal him, and he goes on to live with Frank in Hooverville.
The theatre sequence was filmed at the Parc & Dare Theatre, Treorchy. Scenes set at the Hooverville shanty town were filmed at Bute Park, Cardiff. Some second unit filming for this story was done in New York City. It primarily consisted of static shots of landmarks and landscape views, many of which were digitally altered to remove architecture created since the story's setting. This constitutes the second time any filming for Doctor Who has been conducted in America. (The 1996 TV movie, although produced in Vancouver, Canada, included establishing shots of San Francisco filmed by a second unit; an earlier story, The Two Doctors, was originally to have been filmed in New Orleans, but the budget of the time would not allow it.)
- Hero Pig played by Paul Kasey is mentioned in the credits. This is not a reference to a specific character but to the pig who was given the most to do, 'Hero' being the term for a prop or costume with the most detail and therefore most suitable for closeups.
- "Doctor Who UK airdate announced". News. Dreamwatch. 27 February 2007. Archived from the original on 12 March 2007.
- "Evolution - Final Ratings". Outpost Gallifrey News Page. Source: BARB. 9 May 2007. Archived from the original on 28 March 2013. Retrieved 3 June 2007.
- "Walesarts, Parc Dare & Theatre, Treorchy". BBC. Retrieved 30 May 2010.
- "Walesarts, Bute Park, Cardiff". BBC. Retrieved 30 May 2010.
- Davies, Russell T (3 December 2007). "Production Notes: 12 Facts a-Facting!". Doctor Who Magazine. No. 377. p. 66.
Seven hours a-flying! That's how long it took for our director, James Strong, and his team to fly to JFK, for the Official First Ever Doctor Who Shoot in New York!
- Richardson, Rachel (12 November 2006). "Dalek return". News of the World. p. 31.
- Darlington, David (28 February 2007). "Script Doctors: Helen Raynor". Doctor Who Magazine. No. 379. pp. 30–36.
- "Doctor battles Daleks in New York". BBC News. BBC. 27 December 2006. Retrieved 27 December 2006.