在这部失控犯罪：爱人之死犯罪片中,帕克的大学导师邀请她和一众好友一起到他在岛上的别墅消暑度假，其中也包括爱勒·比尔。帕克和爱勒的秘密恋情还没有公开。夏日的夜，风情十足，诱惑难挡，宾客中弥漫着暧昧与欲望。和爱勒在外面浪漫狂欢时，帕克发现其中一个客人被杀了。爱勒联系了他的朋友克里斯，但克里斯还未到，尸体就消失不见了。岛上唯一的小船失踪，让所有人失去了与外界的联系。杀手一定就在客人当中。帕克在诡异的气氛中更加了解爱勒和克里斯。但杀手还隐藏在深处，又有两人死于非命，一人自杀。
Puck Ekstedt, doctoral student in literature, is invited by her supervisor Rutger to spend Midsummer with him and his wife at their summer house on an isolated island. When he reveals that the young historian Einar Bure will be there too, Puck gladly accepts. When she arrives to the Midsummer party on the island, she finds a bunch of young people, whose lives are entwined since their student days. She quickly notices a web of tensions between them, both erotic and distressing. These tensions grow, when Rutger's former fiance Marianne Wallman unexpectedly turns up with her girlfriend Viveka Stensson. Next morning Puck stumbles upon Marianne's dead body in the wood. Puck and Einar go with the motor boat across the lake to call for Einar's friend Christer Wijk, chief of the national homicide investigation team. When Christer arrives to the island, the boat's motor breaks down. There is no other boat, and no telephone, so now all of them are isolated together on the island. The murderer must be one of the Midsummer celebrators, because there is no one else here. Christer's suspicions are focused on Georg Malm, a former lover to Marianne, but the next day he is found murdered as well.
