Doctor: David Tennant (Tenth Doctor)
Companion: Freema Agyeman (Martha Jones)
Others
Miranda Raison – Tallulah
Hugh Quarshie – Solomon
Ryan Carnes – Laszlo
Andrew Garfield – Frank
Eric Loren – Dalek Sec
Flik Swan – Myrna
Alexis Caley – Lois
Earl Perkins – Man #1
Peter Brooke – Man #2
Ian Porter – Hybrid
Nicholas Briggs – Dalek Voice
Paul Kasey – Hero Pig
Production
Directed by James Strong
Written by Helen Raynor
Script editor Lindsey Alford
Produced by Phil Collinson
Executive producer(s) Russell T Davies
Julie Gardner
Incidental music composer Murray Gold
Production code 3.5
Series Series 3
Length 2nd of 2-part story, 45 minutes
Originally broadcast 28 April 2007
After the creation of the hybrid Dalek-human, the Doctor confronts the Cult of Skaro and uses his sonic screwdriver to help the others escape. Dalek Caan and Dalek Jast discuss their lack of confidence in the now-emotional Dalek Sec, hinting that a change of command may be needed. The Doctor and Martha return to Hooverville, where the Doctor warns Solomon that the Daleks are planning an attack. Solomon believes he can reason with them, but he is killed during the attack. The Doctor confronts Dalek Caan and provokes him, but 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 energy from a solar flare. The Doctor agrees to help once he realizes 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 in the TARDIS so they can start over, in 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, making a new race of Daleks. The Doctor and Laszlo regroup with Martha, Tallulah, and Frank. Martha has analyzed the building plans and tells the Doctor he must remove the Dalekanium panels on the mast of the building to stop the energy collection. The Doctor climbs up, telling Martha to stay behind and fight. As the Doctor struggles to remove the panels, Martha lays out pieces of metal from the framework of the building to connect with the elevator. The Doctor fails to get the panels off in time and ends up holding the mast as the strike hits. The energy flows down the building, electrocuting the Pig Slaves in the elevator but also awakening the new hybrids.
Martha and the others help the Doctor down and then return to the theater with the human-Dalek army following them in the sewers. In the theater, the Doctor pleads with the others 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 resisting. By exposing himself to the gamma strike, the Doctor caused some of his Time Lord DNA to transfer to the human shells, allowing him to control the army. The human-Dalek army turn on Thay and Jast, killing them. 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 once again via emergency temporal shift. Laszlo's heart begins to fail due to his partial transformation as a Pig Slave. The Doctor finds a way to stabilise his condition, but cannot restore his human appearance. Laszlo and Tallulah are reunited, and learn from Frank that the people of Hooverville will take Laszlo in despite his looks.
Evolution of the Daleks