Episode 6.Jimmy manages to swerve and drives off while the Viperox chase after them. Helicopters fly over head and fire at flying Viperox. Stark is annoyed that they are losing, when Lord Azlok storms in and tries to get the truth of where the Doctor is. The Doctor and Seruba have escaped the vault and drive a Jeep to the base, where they see that it's under heavy attack. The Doctor is worried about getting in until Jimmy and Cassie show up with the TARDIS. The TARDIS materialises in the room in Area 51 where Rivesh is dying. In the nick of time, Seruba revives Rivesh. The Doctor asks for the device to be activated and Rivesh relishes the thought of killing the Viperox. However, the Doctor warns him not to detonate it, or it will completely wipe the Viperox out. Rivesh remains adamant on revenge, but the Doctor reinstates his beliefs and tells him that no-one should have the power to exterminate an entire species. Rivesh returns the favour of his revival and trusts the Doctor with the device. The Doctor uses his sonic screwdriver on it and then he rushes into the TARDIS and grabs a cable. At that moment, Azlok holds Jimmy hostage at the entrance to the TARDIS, threatening to kill him if the Doctor detonates it...