10. Queen Mary I [Born: 1516; Died: 1558]

9. Myra Hindley [Born: 1942; Died: 2002]

8. Isabella of Castile [Born: 1451; Died: 1504]

7. Beverly Allitt [Born: 1968]

6. Belle Gunness [Born: 1859; Died: 1931]

5. Mary Ann Cotton [Born: 1832; Died: 1873]

4. Ilse Koch [Born: 1906; Died: 1967]

3. Irma Grese [Born: 1923; Died: 1945]

2. Katherine Knight [Born: 1956]

1. Elizabeth Bathory [Born: 1560; Died: 1614]