The Worst Episodes of I AM A KILLER

Ezdeth Highley reflects on her murder conviction, her transition while being incarcerated and what she's learned during her ongoing 60-year sentence.

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On death row for murder, Deryl Madison reflects on his struggles with mental illness and finds support from an anti-capital punishment advocate.

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Subjected to abuse throughout her life, Victoria Smith confessed to killing her husband. But someone close to the case has doubts about her admission.

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James Walker claims he has no recollection of the 2001 murder he confessed to committing. An investigation into his traumatic past offers more context.

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Daniel Paulsrud says his fatal shooting of partner Leslie was an accident. But accounts from her family — and his handwritten notes — raise doubts.

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By helping his fellow inmates, Jamel Hatcher feels he's turned his life around — but not everyone believes his rehabilitation is genuine.

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Mark Arthur maintains that he murdered a friend's father on a Houston highway for savagely beating his wife. But police have a different theory.

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When threatening messages escalate into an assault that leaves one teen dead and another severely injured, Kimberly Dunkin reflects on her involvement.

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One of the small number of women who commit murder, Lindsay Haugen claims that she strangled her depressed boyfriend in 2015 as an act of mercy.

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At a New Year's Eve party in 1996, Brandon Hutchison killed two brothers, a crime he admits — but there are conflicting versions of the story.

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In prison for killing her husband, a woman details her past abuse and her turbulent marriage. Her mother also reflects on their strained relationship.

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Years after leaving the military, Toby Gregory claims his service and PTSD caused him to murder his wife, Inez. But Inez's family believes otherwise.

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After fatally shooting a coworker, Thomas "TJ" Schiffens maintains his innocence. But details surrounding the crime suggest TJ had a motive.

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After 24 years on death row, Joseph Murphy saw his sentence commuted a week before his execution due to the extreme abuse he suffered as a child.

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Enraged over his rebellious daughter's choice in men, an extremist father enlists his son in a terrifying plot of intimidation and murder.

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Convicted murderer Wayne Doty admits his guilt but requests that his execution be carried out by electric chair, a method no longer used in Florida.

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In 1996, David Barnett murdered his adoptive grandparents, stabbing them over 20 times. Later, he revealed years of abuse at the hands of his father.

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Accept a plea deal or go to trial? Three men receive radically different prison sentences for their roles in the fatal shooting of a cab driver.

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David Cameron Keith recalls the day he took a young hostage before heading to an airport and killing the pilot who volunteered to take the child's place.

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A murderer recounts the crime that ended one life and ruined his own. Those affected, including a police officer and the victim's family, also speak.

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No one -- including David Lewis himself -- disputes that he committed murder. But Lewis's mental fitness remains in doubt despite his death sentence.

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A botched drug deal is only the beginning when Candie Dominguez assists her boyfriend, Daniel Lopez, in his gruesome killing of her cousin.

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After shooting his ex-girlfriend and her new lover, Charles Thompson is charged with manslaughter -- until his ex dies due to a hospital error.

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High on a drug that fuels his paranoia, Deandra Buchanan fatally shoots his aunt, stepfather and girlfriend -- a crime he claims he can't recall.

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Robert Shafer and a friend target a same-sex couple in a robbery, but their crime spins out of control into kidnapping and double murder.

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