Jeannie Miata was convicted of murdering a 68-year-old Texas woman with a lethal dose of insulin in 2002. Inside prison, journalist Carolyn Canville asks her why she did it.

Jeannie Miata

Roger Dean

Megan Haines

Nurse Malcolm Webster was convicted for the murder of his first wife, Claire Morris. For 17 years it was believed to be an accident; until he staged another 'road accident' in New Zealand, involving his second wife, Felicity Drumm.

Malcolm Webster

Anne Grigg-Booth, who was responsible for administering painkilling injections to patients, was a heavy drinker with a passion for drugs. We hear from the doctor that Grigg-Booth's team lined up as an expert witness in her defence. He was never to be called; Nurse Grigg-Booth killed herself.

Anne Grigg-Booth

Efren Saldivar confessed to killing 40 to 50 patients over an eight-year period. Quickly christened an "Angel of Death," he targeted patients who were already near death. Statistical analysis indicates that the total number of murders committed by Saldivar could be as high as 200, but the bodies were cremated after death long before he owned up to his deeds on the wards.

Efren Saldivar

Megan Haines, South African immigrant and mother of a dangerous and disaffected son, carries out a murderous rampage against the elderly in the quiet coastal town of Ballina, New South Wales.

On November 18, 2011, Roger Dean, a nurse at Quakers Hill Nursing Home in Sydney, Australia murdered 11 elderly residents after setting fire to the facility as they slept in a bid to hide evidence of his theft of painkillers.

Vickie Dawn Jackson was described as sweet and 'gone to fat' by locals in her small Texas town. Why did Vickie kill off the friends and relatives of those whom she knew in Nocona, Texas? Texas journalist Skip Hollandsworth spent time with Nurse Jackson at her Texas jail and reveals the truth about a remarkable, and evil, woman.

Vickie Dawn Jackson

Gary Davis told his Facebook friends that 'I hate old people' and days before two patients in his care were found dead, he predicted they would die. Those facts were enough to put him in the frame as a doctor became convinced that foul play was responsible for their. Rob Kaplan, a Forensic Psychiatrist from a Sydney University offers a unique insight into health serial-killers.

Garry Davis

Wettlaufer, 49, of Ontario, intentionally administered fatal doses of drugs to her victims, aged 75 to 96, between 2007 and 2014. After killing, she would post some of her dozens of verses. Wettlaufer's victims included five women and three men - all of whom were patients at Caressant Care nursing homes in Ontario, where Wettlaufer had worked.

Elizabeth Wettlaufer

'Angel of Death' Donald Harvey is believed to have murdered nearly 60 patients, often by administering arsenic and cyanide, in a 20-year killing spree.

Donald Harvey

The stories of some of the most prolific murderers and serial killers to walk hospital grounds across the globe. Often referred to as the ‘angels of the ward’ experts examine what turned these caregivers into killers.

Jeannie Miata

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Season 2 Episodes10

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