British woman who, as a child, strangled two young boys to death. She served 12 years in prison before being released in 1980, at which she point she began living under a variety of pseudonyms.
She was reportedly a victim of repeated acts of abuse by her mother, who worked as a prostitute. She killed Martin Brown one day before her 11th birthday.
Her 1998 biography Cries Unheard: the Story of Mary Bell became a source of national controversy after it was discovered that she had been paid for her participation in the book's creation.
She had a daughter, born in 1984, whose name is unknown due to court-ordered anonymity.
She and Eric Smith are both known for having committed murders at a very young age.