100 Murder Cases

Mary Bell

Mary Bell was 10 years old when she committed her first murder by strangling a 4-year-old boy. Later that year, in 1968, she strangled a 3-year-old boy. This time she had an accomplice. Both of them carved their initials on the boy's body and cut off his private parts. Bell was sent to prison for 12 years, and in 1980, at the age of 23, she was granted anonymity. She now has a daughter and lives in England under a new name.