The cases of 10 year old killer Mary Bell; Lorraine Thorpe, at 16 Britain's youngest convicted female double murderer; and 14 year old "happy slap killer" Chelsea O'Mahoney.
The cases of Dena Thompson who poisoned her husband; Constance Kent who slit her step-brother's throat in one of Scotland Yard's first cases; and Theresa Riggi who killed her children rather than risk losing them in a custody battle.
The cases of Jane Andrews, an assistant to the Duchess of York who killed her boyfriend; Kate Webster who hacked her boss to bits and made human lard; and Heather Stephenson-Snell who shot a man trying to prevent her committing murder.
The cases of Pamela Gourlay who slit her neighbour's throat; Elizabeth Brownrigg who tortured orphans in her care and was publicly hanged; and Edith McAlinden, the architect of a triple murder in a Glasgow flat dubbed "The House of Blood".
The cases of sexual sadist Claire Nicholls who tortured her husband to death; Nicole Hollinshead who ordered the murder of a suspected love rival; and East End gangster Linda Calvey, aka "The Black Widow".
The cases of Sharon Carr, a 14 year old sexual sadist; Kemi Adeyoola, who wrote and enacted a manifesto on killing elderly people; and Ruby Thomas, convicted of a vicious hate crime in London's Trafalgar Square.
The cases of Melanie Smith who killed a family over a neighbours' dispute; Fiona Donnison who killed her children to get back at her husband; and Tracie Andrews, who stabbed her boyfriend then claimed he'd been the victim of road rage.
The cases of Farzana Ahmed who ordered the honour killing of her daughter; friends Pauline Parker and Juliet Hulme who killed the mother they thought was separating them; and Rekha Kumari-Baker who killed her two daughters out of jealousy.
The cases of Carol Croydon, Shauna Hoare and Karen Walsh who committed sexually twisted murders.
The cases of Harmohinder 'Mindy' Sanghera, who murdered her lover's pregnant wife; Sharon Edwards, who killed her husband after physically abusing him for years; and Rajvinder Kaur, who was driven to murder her mother in law.
The cases of Susan Edwards, who killed her parents over a stolen inheritance; Rebecca Douglas, who murdered a teenage rival in London; and Holly and Ashleigh Robinson, who killed their own father after he and their mother separated.
The cases of Ann Browning, who killed her lover for his money the day the moved in together; Dorothea Waddingham, who turned her house into a nursing home then murdered her clients; and Christina Button who killed her husband for his life insurance.