1986: Swedish Prime Minister Olof Palme and his wife Lisbet Palme are attacked by an unidentified assassin while walking home from a movie theater in Stockholm. Palme was shot in the back at close range and died just past midnight while his wife suffered a minor injury when a bullet grazed her back. Two years later, small-time criminal and drug addict Christer Pettersson was arrested, tried and convicted for Palme's murder. Pettersson's conviction was later overturned on appeal. Although more than 130 people have confessed to the murder, the case remains unsolved, and a number of theories as to who carried out the murder have been proposed.