Major serial crime investigations spanning multiple victims, regions, and decades.
The Zodiac Killer case concerns unsolved attacks and taunting ciphers in Northern California between 1968 and 1969, one of America's most famous murder mysteries.
The Green River killings were a long-running series of murders in Washington state that led to Gary Ridgway's conviction in one of America's largest serial-homicide investigations.
The Ted Bundy murders were a multistate series of killings between 1974 and 1978 that became one of America's most notorious serial-murder investigations.
Jack the Ripper was the unidentified killer linked to the 1888 Whitechapel murders in London, one of history's most famous unsolved homicide cases.
In 1997, James Daveggio and Michelle Michaud used a modified minivan to kidnap, torture, and murder victims in California and Nevada.