3.5 - Evolution of the Daleks

From IMDB:
The Daleks have begun their transformation to humanoid form however the human-Dalek hybrid, Dalek Sec, is raising doubts among the remaining three machine Daleks. He is showing human traits and emotions: he changes his mind, shows compassion by sparing some of the transients in Hooverville and to the consternation of the machine Daleks, suggests their old ways were wrong. When Dalek Sec asks for the Doctor's assistance in relocating them to a new planet, the other Daleks rebel.

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