Ramirez terrorized California during the 1980s.

Lyle and Erik Menendez infamously killed their parents in 1989.

In the panoply of American killers, Gary Ridgway stands out.

Police discovered 39 Heaven’s Gate suicides in California.

Dahmer’s murders went undetected until his arrest in 1991.

Escobar was reviled by some and celebrated by others.

The mystery of the Zodiac Killer still enthralls the public.

Blanco made it to the top of the drug trade in the 70s and 80s.

Gein was notorious for his fascination with women’s body parts.

Jim Jones led 900 followers to mass suicide in Guyana’s jungle.