I once worked with a girl in her early twenties who had (to me) an irrational interest in true accounts of violence and murders. This was in the days before most homes had internet connection and I'd noticed a sharp increase in the cost of our office connection.
When asked about it she acknowledged she had been using it to research such items; a fascination which started in her teens when trying to distract herself from a lifelong mobility disability. We arranged for her to see a counsellor to discuss this, following which she decided to leave to study forensics. I met her again several years later and was sad to learn she had ditched the course after starting an online relationship with an ex-con in America. She'd gone to the states to meet him, had a baby as a result and realised the potential risk to her new-born daughter so escaped back to the UK 
Threatened with legal action (follow on from potential scam thread)
Butterfly grabbers , for scaredy cat


It's not based on a true story though, as far as I'm aware.
