A young girl is forced off a cliff while riding her bicycle. The girl is later identified as a student/worker at the stable where Robert's daughter, Ida, takes lessons. Once again details are leaked to the press...could it be a police officer? The murder affects things at home, as Robert's relationships with his daughter and father come into play.

An archaeologist is murdered and found in the woods, a victim of a Viking ritual. Was it her father (a property owner who wants to develop a "sacred" site), the protestors (Viking revivalists against the development), her University advisor (whom she may have been filing sexual harassment charges against) or someone else? Niklas is feeling neglected as Emma (a teacher and close friend of the family) has come to stay for awhile with her newborn baby, taking Ida's attention and playtime. Robert also deals with his troubled relationship with his father.

Flashback 13 years - two teenage sisters celebrating and drinking on the island - one passes out and when she awakes finds her sister missing - who is later found dead. Present time - an explosion at a stone quarry results in a death ... accident or murder? Robert's mother comes for a visit.

An art dealer is found murdered - the investigation uncovers the theft of major artwork. Motive leads to a betrayed wife, a mistress and a lover. Robert's jealousy is triggered when Line's old boyfriend makes an appearance and an overnight sailing trip ensues.

A prominent architect is found dead at a celebratory event - Inspector Anders and team's investigation leads through multiple suspects with complex alibis. At home, Line becomes more discontented and Robert seems oblivious until Line leaves with the kids to visit her friend in Brittany.

Some teenagers party - but things get out of control. A girl accuses one of her friends of raping her. Later, a body is found in the demolished holiday house. Things get complicated, but the involved teenagers block off.

Two girls - one suicide, one murder. Robert and team's investigation leads to a surprising conclusion. On the homefront, Line's absence has its own effect on Ida, who wonders if she will ever return from Africa.

Primus oceanography student Peter Holmgren is found hung during a class run, suicide after most surprisingly failing a crucial test, costing him one of only eight student spots aboard the new Goteborg university scientific ship's impending EU-subsidized Indian Ocean expedition, an ideal career boost. Classmate Albin Sundergart now gets his spot. Shortly after Marine biology professor Anna Norum, who failed Peter and the next day Albin's girlfriend Lynn Thorson is beaten in hospital, but first claims it was car, then she didn't recognize her assailant and waves police protection. Peter's shattered father Ingmar Holmgren is out for revenge. After a few days, Lynn Thorson's corpse in found, burnt and thrown down a cliff. Robert Anders finds Albin has no single alibi and had an affair with Anna Norum, which compromises her career, yet he denies Internet-posting the video they made of themselves in bed.

Janne Brolin abuses his son Andreas, ignoring animal-loving grandson Elias's objections to shooting a seal and forces/tricks the knave, to try chasing ecologist Kristian Nyman and wife, who end up killed in an explosion due to collision offshore Farö island. The Brolins claim it was an accident and pretend Elias wasn't aboard. Teen daughter Agnes Nyman convinces the commissioner her father wouldn't touch a gun, let alone kill a protected species, but the trial against the Brolins ends in acquittal for lack of proof. Elias runs away after a bitter fight with his abusive grandpa, returning with Agnes to paint 'murderer' on the barn, and when caught by the tyrant who attacks her, Elias beats him up possibly fatally. After the kids flee, his parents cover it all up as a robbery in their fish cleaning workshop. But the truth has ways to come out, not without grave danger unless Robert clears it up in time.