Gripping docuseries exploring the 1986 assassination of Sweden's Prime Minister Olof Palme - a case dubbed "Europe's JFK" - and author Stieg Larsson's extraordinary investigation into the case.

In 1986 the Prime Minister of Sweden, Olof Palme, was assassinated on a busy street in Stockholm. The murder sent shockwaves around the world, but years of police investigations amounted to very little. That is, until a former Swedish diplomat accidentally discovered the personal files of the late best-selling crime writer Stieg Larsson, author of The Girl with the Dragon Tattoo. The files reveal Larsson had spent a decade investigating the murder, and before his sudden death in 2004 was on the brink of a huge breakthrough. This is the shocking true story of Europe's most high-profile assassination - and the people determined to get to the truth.