In 1991 the bodies of Trevor Buchanan and Lesley Howell were found in a car in Castlerock, Northern Ireland. It was believed they had formed a suicide pact, devastated by the discovery of an affair between their spouses. For their surviving spouses, Colin Howell and Hazel Buchanan, life slowly returned to normal. But in January 2009 Colin contacted the police and told them that he and Hazel had killed their respective spouses. (dir: Judy Kelly)