Episodes
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1. Obsession
The case of 17th-century serial killer Erzsebet Bathory - a Hungarian aristocrat who is said to have murdered 600 of her servants in an attempt to achieve eternal youth
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2. Greed
The cases of Belle Gunness, who murdered her victims to reap financial rewards, and a carer from Connecticut who turned a home for the elderly into a death parlour
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3. Revenge
The stories of notorious killer Katherine Knight, an Australian who skinned and decapitated her errant lover, and Blanche Taylor-Moore, who poisoned her partner in hospital
Episode information from TMDB. Air dates refer to the original broadcast or release.