"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.