Killing Spree

A closer look at the 1987 Hungerford massacre, in which 27-year-old unemployed labourer Michael Ryan fatally shot 16 people, before committing suicide.

The story of one of the UK's most dangerous hate-crime killers who targeted Brick Lane, Soho and Brixton in 1999 in a 13-day nail bombing campaign.

The story of Maksim Gelman, who killed four people and wounded five in a 28-hour stabbing spree in New York City in February 2011.

Christopher Dorner: A look at the murderous rampage of the former Los Angeles police officer who killed four people, including two police officers, in February 2013.

The story of Jennifer San Marco, a former US Postal Service employee who shot and killed seven people in Goleta, California, in 2006 before taking her own life.

Banks: In 1982, former prison guard George Banks went on a killing spree in Pennsylvania. When he was done, 13 people were dead. Among them, five of his own children.