Man guilty of 'vulnerable' woman's murder - Mystery surrounds world's most prolific female serial killer as case labelled 'stitch-up' - New theory about woman known as world's most prolific female serial killer - Victim or monster? The mystery of the most prolific female serial killer of all time - Woman of the Hour: The haunting true story of the Seventies serial killer invited on primetime TV - Serial killer in UP's Bareilly? In 14 months, 9 women killed in same manner - 'Sadistic' killer who stabbed woman 60 times to face public parole hearing