Lesterson and his assistants manage to revive the Dalek and Lesterson removes its gun stick after one of the assistants, Resno, is killed. Quinn, revealed as the one who summoned the examiner, is accused by Bragen of sabotage and is arrested, with his position then assigned to Bragen. The Doctor, Ben and Polly are present during these events, during which Lesterson arrives with the reactivated Dalek, which feigns loyalty. The Doctor remains suspicious and verbally hostile to the Dalek, who recognizes the Doctor, finally convincing Ben to accept that he is the Doctor. Lesterson reactivates the other two Daleks and removes their guns. The three Daleks are revealed to be secretly planning to take over the colony. The Doctor's warning that the Daleks are secretly reproducing is ignored, and he and Ben are arrested by Bragen, who knows the Doctor is not the examiner: Bragen is the examiner's killer. Polly is kidnapped by the rebels. Bragen, secretly the leader of the rebels, executes his Coup d'état. He has a rearmed Dalek kill Hensell, and then decides to kill off the rebels. Meanwhile, Lesterson loses his sanity upon discovering that the Daleks are being mass-produced inside the capsule. The Doctor, Quinn, and then Ben and Polly escape imprisonment and help fight what appears to be a losing battle. During the battle, Lesterson is killed by the Daleks. The Doctor finally destroys the Daleks by turning their own power source against them. Bragen is shot by one of the surviving rebels as he attempts to kill Quinn, who becomes the new governor. As the Doctor returns to the TARDIS with his companions, a damaged Dalek stands motionless, before its eyestalk moves as the TARDIS dematerializes. Production Episode is missing Working titles for this story included The Destiny of Doctor Who and Servants of Masters. Anneke Wills was on holiday and therefore absent from episode four. Similarly, Michael Craze was absent for episode five. The Doctor's regeneration was meant to be a "horrifying" metaphysical change. The producers compared it to the hallucinogenic drug LSD, which had the side-effect of "hell and dank horror". Episode 6 was recorded using the 625-line system before the official switchover, although it was telerecorded onto 35mm film, instead of videotape. Cast notes Bernard Archard returned in Pyramids of Mars (1975). Peter Bathurst returned in The Claws of Axos (1971). Robert James returned in The Masque of Mandragora (1976).