In 1980, the entire world was stunned by the murder of John Lennon. Was Mark Chapman a cold-blooded killer or a seriously deranged young man? We will backtrack through the lives of both men to set the scene through interviews and footage.

Crimes of the Century looks at the case of Texas woman Andrea Yates killed her five children by drowning them one by one in a bathtub. A media circus ensues at her trial. She is initially sent to prison for life, but is later found not guilty by reason of insanity.

In 1981, a gunman fires six shots at Ronald Reagan. What follows is a chaotic rush to save Reagan's life, confusion at the White House, and an urgent investigation to find out if this is a wider plot, or the work of a lone assassin.