Doctor Who: 5 Best Dalek Defeats In NuWho

5. Destroyed By Their Own Rejects, The Witch's Familiar, Series 9

The second part of Doctor Who's series opening two-parter, The Witch's Familiar reveals that the Daleks dispose of their dead, dying, or injured through Skaro's sewer system. At first, this seems to be a fun fact from Missy to Clara as they travel through said sewer system in an effort to return to The Doctor.

However, this small piece of exposition becomes a vital plot point later in the episode, when Davros and the Daleks plans come to fruition.

Davros believes that he has tricked The Twelfth Doctor into giving him regeneration energy that has restored the dying creator of the Daleks to full health and strengthened the Daleks themselves, transforming them into a form of Dalek/Timelord hybrid.

However, Davros fails to realise that the energy is also being channelled into the dead and dying Daleks in the sewers, and they are not happy about being abandoned. The Doctor makes a hasty escape with Clara as the rejected Daleks rise from the grave to take their revenge on the city and their creator..