The unsolved murders of women around Green River near Seattle haunt investigators for decades — unti...

A serial killer’s deadly road trip through Florida in 1990 leaves several men dead and spurs investi...

Odd suspects, questionable confessions and ever-shifting stories confuse detectives in the hunt for...

A consequential letter surfaces with stirring claims and upends the seemingly closed case, calling i...

A terrifying Kansas serial killer reemerges after 30 years. Using DNA technology and help from the m...

A serial shooter targets random pedestrians on the Phoenix streets, leading detectives on a desperat...

After multiple gay men sharing similar features go missing in Toronto, detectives follow an internat...

As more men vanish, a fresh task force assembles. New surveillance footage and recovered computer fi...

Dubbed "The Railroad Killer," a man hops trains to his victims' homes, bludgeoning them, helping him...

In the '90s, a killer in New York selects his victims based on their birth signs. Can the cops catch...

A deadly bomb explodes at the 1996 Olympic Games in Atlanta. But as FBI agents investigate subsequen...

In 2002, a sniper shoots six victims in a Washington suburb, linking him to a spree that resulted in...