A police officer shoots and kills an African immigrant who is going to be deported from Sweden. Kerstin Holm is assigned the task of interviewing the police officer, who turns out to be her ex-boyfriend, Dag Lundmark. During a break in the interview, Lundmark disappears without a trace. Meanwhile, a burglar breaks into an apartment where he finds a body with a suicide note next to it. The letter leads to the discovery of two more bodies in a marsh in Värmland. (Part 2)

A balmy summer night. The stillness is broken when a Jewish neuroscientist is found strung up by his feet above a grave in Stockholm. Meanwhile, a car is waiting outside a refugee facility in Vresta with the engine running. A few minutes later, a risky escape to a distant destination begins. The following morning a zookeeper makes a macabre discovery in the wolverine enclosure at Skansen, and the leads slowly start to take shape. The summer has started badly for the A-group. The cold winds of change are blowing through the corridors of National CID and somewhere out in Europe evil lies in wait for inspector Arto Söderstedt. (Part 2)