A closer look at the investigation into the unprecedented wave of terror that struck Washington DC in 2002, when renegade snipers killed 10 people over 23 days.

Interviews and footage set the scene of the 1980 murder of former Beatle John Lennon by Mark Chapman, an event that shook the world.

Andrea Yates drowns her five children in a bathtub in an effort to save them from the clutches of Satan.

Doctors rush to save Ronald Reagan's life; confusion reigns at the White House and an investigation begins to find out if there is a wider plot.

A truck bomb aimed at a federal building in Oklahoma City in 1985 kills 168 people and injures 680 others.

American Amanda Knox is charged with being involved in the 2007 murder of her roommate, Meredith Kercher, and goes on trial in Italy.