John Lennon Assassination
In 1980, Mark Chapman shot and killed John Lennon in front of his Manhattan apartment building, hours after the former Beatle had autographed an album for him.
Andrea Yates
What drove a Texas mom to do the unthinkable and drown her five small children in the bathtub of their Houston home?
Reagan Assassination Attempt
In 1981, a gunman shot President Ronald Reagan, sparking confusion at the White House and an urgent investigation to find out if it was a wider plot.
Oklahoma City Bombing
In 1995, a decorated war veteran carried out an attack that killed 168 people at an Oklahoma City federal building.
Waco
One of the worst debacles in law enforcement history: an inferno in Waco, Texas, killed 80 people, including four federal agents.