Four children by her father. Thirty years of horrific sexual abuse. In March 2009, Joseph Fritzl was sentenced to life in jail for the systematic imprisonment, torture and rape of his daughter Elisabeth over 24 years, fathering seven children. The case shocked the world. But just a month before, the story of Australia's own house of horrors was emerging in a Victorian country town. Under a blanket of suppression orders, a man in his late sixties was quietly arrested, charged - and later convicted - for the systematic rape, abuse and imprisonment of his only daughter, 'Katherine', which spanned decades. He fathered four of her children. Until now, this shocking story has been buried under a complex legal web and Katherine's insistence on silence so that she could rebuild her shattered life and protect her children. In Behind Closed Doors, and written with Sue Smethurst, Katherine breaks her silence and tells the story of how she survived - and how such degrading abuse went unnoticed for so long.'s father was charged with 83 separate offences but went to trial with the charges condensed into 13 counts of indecent assault, incest and assault, each charge representing multiple offences. One charge alone represented 700 counts of rape. Until now, this shocking story was buried under a complex legal web and Katherine's insistence on the suppression of the story while she began rebuilding her shattered life and the lives of her three surviving children. In Behind Closed Doors, and written with Sue Smethurst, Katherine breaks her silence and tells the story of how she survived decades of degrading abuse - and how it went unnoticed for so long. We also hear the voice of the salt of the earth country cop who uncovered the abuse and saved Katherine, spending two years forensically gathering evidence and finding witnesses to bring her father to justice. We also hear from Katherine's psychiatrist and how she helped Katherine through the darkest of days and helped her begin rebuilding her life - and why her children (born of her father's rape) have given her the will to live.