Martina Cole tells the story of Myra Hindley, dubbed 'the most evil woman in Britain' by the tabloid press, who killed five children in the 1960s.
Bristol-born Amelia Dyer was a Victorian-era nurse believed to have been responsible for the deaths of over 400 babies.
Beverly Allitt, a seemingly compassionate nurse, came to be known as the Angel of Death after murdering four children under her care.
Rose West, with her husband Fred by her side, sexually abused and killed ten women, earning herself a life sentence in prison.
Mary Ann Cotton was a Victorian Black Widow. Killing for greed, she murdered husbands, stepchildren, her mother, and even her own children.
Over 600 victims met their demise at the hand of Countess Elizabeth Bathory, who preyed on the young women who served her.