Ulrik Hansson is 45 years old and lives a secure life in a Swedish residential district together with his wife Monika and their two children. He's got a well-paid job as an architect and builds a new detached house which the family will move to. Everything is just great. He thinks. One morning he wakes up and shockingly discovers that they're gone. The whole family...

Sleepwalker

Swedish politician John Veden vanishes without a trace. There's no hint he's dead yet but Beck's team gets the case due to Police Chief Oberg's friendship with the man whom she dined with him the evening before he vanished. When they find out Veden was a gambler with heavy debts battling his addiction the case leads Martin Beck, Gunvald Larsson and freshly returned Lena Klingström into Sweden's illegal gambling scene. And Veden was planning to expose his own addiction and his party's huge financial profits from gambling in a confessional book - which his political allies got wind of via illegal data theft. With several people having an interest that Veden stays missing the team tries to find the politician and the true perpetrator while Beck is grappling privately with his ambivalent feelings about working with ex Lena again....