The explosion of racial hate in an Alabama town is viewed by a little girl whose father defends a black man accused of rape.

The police have a new lead who holds the key to Nanna's death, but getting that information from him is another story. Troels's political opponent takes advantage of his situation.

Troels lands in more trouble as someone who is part of his campaign becomes a suspect. As Pernille and Theis say goodbye to their daughter, Theis inserts himself in the case.

Sarah and Jan pursue a vital new lead but someone unexpected intervenes. Drastic personal changes affect Sarah. Meanwhile, Troels attempts to establish a new alliance.

Theis and Vagn have taken the law into their own hands, stalling the investigation. Sarah and Jan have 24 hours to find conclusive information or they will be taken off the case.

After Sarah and Jan find more damning evidence, Troels is presented with an ultimatum. Just when Theis and Pernille believe that the case is coming to a close, something inexplicable happens.

Sarah and Jan track down the driver of the car but Jan's impatience deters the investigation. Troels realizes that confidential information is being leaked from his office.

Theis and Pernille's worst nightmare comes true when it's confirmed that they're 19-year-old daughter Nanna has been found. The car she is found in is linked to the office of mayoral candidate Troels.

Detective Sarah Lund is about to move to Sweden with her boyfriend and son, but her plans are derailed by a disturbing case with potential connections to a prominent politician.

Sarah and Jan discover a critical link to Nanna's murder and embark on a race-against-time hunt for the killer. Nanna's last message leaves Pernille and Theis with more questions than answers.