Between 1978 and 1995, Ted Kaczynski killed three people and injured 23 more in a nationwide bombing campaign that targeted people involved with modern technology.
Heriberto "Eddie" Seda was driven to kill after watching a PBS special about the original Zodiac Killer, who terrorized Northern California in the 1960s and '70s.
Authorities have announced that almost 40 years after Mary London's partially naked body was discovered on the side of the road, new DNA technology has pointed to a primary suspect.