With all of time and space to work with... this show never fails to surprise! For this list, WatchMojo UK counts down the greatest plot twists in "Doctor Who" history. Including the likes of River Song, Donna Noble, Oswin, Amy and Adric, plus some iconic regeneration scenes, some of the greatest ever Dalek storylines, and a certain astronaut on the shores of a certain lake... these are the times when the "Doctor Who" writers really outdid themselves. Geronimo!

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