10 Horrific Fates Suffered By Doctor Who Characters

10. Kizlet's Entire Adult Life Is Wiped From Her Mind (The Bells Of Saint John)

While this one might not seem as bad as the rest (because there's no death or physical pain involved) it's still a really traumatic thing to happen to a person.

The Bells of Saint John is a weird episode in which innocent people get sucked inside the wi-fi and trapped, a sinister operation that is led by Miss Kizlet, who, in turn, serves an even higher authority called the Great Intelligence.

Technically though, Kizlet isn't really "serving" the Great Intelligence - she's being controlled by it, a fact that she isn't fully aware of. But at the end of the episode, Kizlet is freed from the Great Intelligence's grasp after the Doctor intervenes, and the true nature of her connection to her "boss" is made disturbingly clear.

It turns out that the Great Intelligence began manipulating her when she was just a little girl. So, when she's finally freed, she becomes that little girl again. Kizlet's first line after the Great Intelligence leaves is "where are my mummy and daddy?" because the last thing she remembers is her parents leaving when she was a child.

It's really sad to watch, because it means that her entire adult life has been a lie. She still thinks she's a little girl, scared and confused about her parents' absence.