The Worst Episodes of Voice of a Serial Killer

Episode one looks at one of the most feared child murderers and sex offenders the UK has ever known: Robert Black. In 1990, Black was serving a life sentence in Saughton Prison, Scotland, for the attempted abduction of a 9-year-old school girl, but was also suspected of having abducted and murdered other young females.

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The confessions of 14-year-olds Kim Edwards and Lucas Markham reveal the shocking justifications for murdering Edwards' mother and younger sister.

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After hearing the confessions of Colin Ireland, who murdered five men in two weeks, detectives have been haunted by the cold and calculating detail unlike anything they'd heard before.

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When nurse Elizabeth Wettlaufer walked into a police station, she confessed to murdering eight patients with insulin, but explained that she had the ultimate motivator - God.

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A confessional interview with Ted Bundy.

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Nilsen murdered 15 young men whose bodies he sought to preserve as companions before dismembering their remains for disposal down the toilet.

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Few killers have divided opinion like Aileen Wuornos. Having gunned down six people, she confessed, but it was not enough to save her.

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Two British serial murderers killed a generation apart, but with a common goal - they killed to gain an infamy that had eluded them in normal life.

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Pickton was a pig farmer who killed 49 women before feeding them to his hogs. He was caught when an undercover police officer posed as a cellmate.

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Ridgway remains one of the most prolific murderers in U.S. history, even killing prostitutes while his young son waited in the back of his car.

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When Becky Watts disappeared the country was anxious for her return until police find her body. Soon stories don't add up and a computer history shows that evil lies close to home.

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The case of Canadian serial killer couple Karla Homolka and Paul Bernardo.

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After the death of her husband, author Helen Bailey found happiness in a new partner, but when she disappears two years later, friends and family start to ask questions.

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Jennifer Pan witnessed the murder of her mother and the attempted murder of her father, but when he wakes from a coma, her father has a very different story to tell.

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The FBI attempt to find a killer with no victim or geographic profile, and who covers his trail with counter forensics.

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Fraternal codes are used to uncover the secrets behind a murder after a body is found.

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When a criminal on probation embarks on the killing spree of ex lovers, police try to get ahead of the man who will later insist he is a victim and that society are to blame.

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