1
The infamous 19th-century London serial killer who was never identified.
2
The 1947 murder of Elizabeth Short in Los Angeles, a gruesome and unsolved case.
3
The 1922 unsolved murder of a German family on their isolated farm.
4
The unidentified serial killer who taunted police with codes in the late 1960s and 1970s.
5
A mysterious early 20th-century serial killer in New Orleans.
6
A 1948 Australian case involving a man with a cryptic message in his pocket.
7
The unsolved 1996 murder of child beauty queen JonBenét Ramsey in Colorado.