Discussion: Heidi tells Rissa all about the horrific case of Mary Bell, a child who murdered children. Discussion starts: (00:13:48) Sources: Mary Bell Mary Bell: The Ten-Year-Old Murderer Who Terrorized Newcastle In 1968 10 Facts About The 11-Year-Old Serial Killer Mary Bell Murderous Children: 11-Year-Old Serial Killer Mary Bell Meet Mary Bell: The Youngest Serial Killer Who Slaughtered Children Hounding of Mary Bell : Child killer forced into hiding after tabloids track her down True Crime Tuesday: Mary Bell Rss Apple Podcaster →