“PK” is the designation given by forensic psychologists to a European female serial killer who between 1991 and 1998 murdered two women and who savage attempt on a third resulted in an unlikely recovery. All three were complete strangers. PK was never prosecuted for these crimes. Her guilt was only discovered after she had been institutionalized for mental disorder.
In 1991, After threatening two women with a stiletto knife, she followed a third woman returning to her car and stabbed her to death.
She first killed in 1991, after stalking women in a town near where she lived. In 1992 she was arrested for arson and was in and out of jail for four years. PK’s second murder was committed in 1998. The victim was a 61-year-old woman who PK savagely attacked, stabbing her about 30 times and slamming her with a large stone. In 1998 PK slashed the throat of an elderly book shop owner who was not expected to live, but who pulled through. When PK was to later discuss her crimes with psychiatrists she revealed that upon learning that her third victim survived, she disappointed because she was a “perfectionist.”
The only reason PK’s case came to light is because it was reported in a professional journal in 2006. [Andreas Frei, Birgit Völlm, Marc Graf, Volker Dittmann, “Female serial killing: review and case report,” Criminal Behaviour and Mental Health, Volume 16, Issue 3, pages 167-176, September 2006; publ. online Jul. 13, 2006]
Links to more cases: Female Serial Killers Who Like to Murder Women