4×07 The Daleks Take Manhattan: Part 1 of 2. The Doctor and Sammy travel to New York in the 1930s, where people are disappearing, and an old enemy resurfaces. Trapped in Earth’s past without the Progenitor, the Cult of Skaro prepares a bold move to restore the Dalek race, and the only person in the universe who can save them from extinction is their greatest enemy.