This post will definitely be (as Ralphus often says) a slippery slope. That's precisely why I won't go into too much detail or share a photo of the victim – you can find it on Wikipedia.
Play this song while reading the article:
Macabre - Vampire of Dusseldorf
https://www.youtube.com/watch?v=961M2KAZVkM

This type of home education can be seen as laying the foundation for what Peter later became and did. I should note that Peter also enjoyed torturing animals, and he admitted to committing his first murder at the age of nine (pushing a boy who couldn't swim into a river) – but he was never convicted for it.When intoxicated, Kürten's father often forced his wife and children to assemble before him before ordering his wife to strip naked and have sex with him as his children watched.
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Fucking whore!At the age of 13, Kürten formed a relationship with a girl his age and, although she allowed Kürten to undress and fondle her, she would resist any attempts he made to engage in intercourse.

This I can easily understand. Especially if you end up with one of those nasty girls who physically and intellectually isn’t much different from the average ruminant.To relieve his sexual urges, Kürten resorted to acts of bestiality with sheep, pigs and goats in local stables, (...)

This part of the story stands out, doesn’t it? I can’t wait for him to replace pigs and sheep with real girls.but later claimed he obtained his greatest sense of elation if he stabbed the animals just before achieving orgasm.

Peter claimed that in 1899 he had sex with an 18-year-old girl and then strangled her afterward – this story was never confirmed.

I believe the story is heading in the right direction and that all his prior education has borne fruit. Did I mention that Peter at one point tried to rape his own sister?

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Let's move on to the most interesting part:
During a robbery (1913), Peter found C.K. in bed. Peter strangled her, took a knife and slits her throat. He admitted that the dripping and splattering of blood brought him to climax immediately and forced him to cum.
The next day, Peter visited the tavern that was right across the street from the house where he killed C.K. He sat in the tavern and listened to what people were saying about the crime, how horrified, scared and angry they were.
Peter visited the grave of C. K. on several occasions and ended up touching the burial ground and ejaculating only by doing that. (This is something we do not hear often.)
I think this is a very interesting and unique story. Peter was sentenced to death and executed on the guillotine.
Serves you right, Peter! C.K. was a very beautiful girl and I think you should have waited for a whole decade before murdering her. Sick asshole!

Wikipedia: https://en.wikipedia.org/wiki/Peter_K%C3%BCrten#