A NEW Discovery documentary has been released which focuses on the crimes of killers Karla Homolka and Paul Bernardo.

       Karla’s own sister Tammy was one of their victims, while others were also subject to rape and assault.

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       Karla served 12 years in prison for manslaughter before her release in 2005 Who are Karla Homolka's parents? Karel Homolka

       Karel Homolka is a Czechoslovakian immigrant and a former traveling salesman.

       At the time of his daughter's release in 2005 he told the Canadian Press that he was not ready to rebuild his relationship with his daughter.

       Mr Homolka told The Globe and Mail: "Some day, I guess."

       Karla pleaded guilty to manslaughter and served a 12-year prison sentence.

       But when her father was asked whether he'd be there to greet his daughter as she finished her sentence, Mr Homolka said: "Not me, anyway.”

       Dorothy Homolka

       Little is known about Karla's mother, Dorothy, who has refrained from speaking to the media about her daughter's crimes.

       However, during Karla's trial in the 1990s, she reportedly testified that her daughter was beaten by Bernardo and had also been a victim of his abuse.

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       Karla previously told authorities that she was an unwilling accomplice to his crimes in a move later dubbed the "Deal with the Devil" by the Canadian press.

       Who was Karla Homolka's sister Tammy Homolka?

       In December 1990, Karla and Bernardo - known as the Ken and Barbie killers - drugged, raped, and murdered her 15-year-old sister, Tammy.

       Bernardo was allegedly upset that Homolka was not a virgin when the pair met, so Homolka allegedly offered up her 15-year-old sister as a "virgin sacrifice" to him.

       While her family hosted a holiday party, Homolka spiked her sister’s eggnog with Halcion and brought her downstairs to the bedroom where Bernardo was waiting.

       Bernardo allegedly raped the young girl, who subsequently choked on her vomit from the sedative drugs and passed away.

       At the time, her death was ruled an accident and the couple continued to take in young women to assault and sometimes kill.

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       Karla flanked by her parents Karel and Dorothy as she faced trial Who is Karla Homolka's sister Logan Valentini?

       Logan legally changed her name in 1996 just three years after her sister and her twisted husband Bernardo were arrested.

       In 2014 she emerged during the trial of sick killer Luka Magnotta – who killed and dismembered Chinese international student Lin Jun before mailing his hands and feet to elementary schools and police stations.

       Ms Valentini reportedly appeared as a witness because Magnotta – who was later given an automatic life sentence for first degree murder - labelled the grim packages with Ms. Valentini's name and return address.

       As she was questioned by the court Ms. Valentini reportedly confirmed that she had been working as a cashier and that she was Karla Homolka’s sister.

       Later reports suggested that Karla had been living in Quebec and has since remarried and become a mother.

       In 2017, she was spotted interacting with kids at a primary school in Montreal – much to the horror of local parents.