It’s Thirties New York and, in the midst of the Depression, people are disappearing off the streets, as Russell T Davies’s Doctor Who continues. Savage Pig Men hide in the sewers and, at the very top of the Empire State Building, the Doctor’s oldest enemies are at work, preparing their most audacious plan yet.

David Tennant stars as the Doctor and Freema Agyeman plays his new companion, Martha Jones. Miranda Raison and Ryan Carnes guest star.

Saturday 21 April
6.50-7.40pm BBC ONE