When a childhood friend vanishes, Rebecka Martinsson returns to her hometown, outside of Kiruna. There, nothing is what it seems. She soon finds herself entangled in the pursuit of the killer.

Now part of the Kiruna murder investigation, Rebecka thinks she's closing in on the answer to the crime, but she's forced to confront her troubled childhood and the past she struggled to leave behind.

A young woman is found dead at an ice fishing camp on a frozen lake. Meanwhile, Rebecka is offered a role as a prosecutor in Kiruna, but her unconventional working methods spark opposition from her colleagues.

Rebecka has been fired as prosecutor, but can't let go of the investigation into the murder of the woman found at an ice fishing camp. Her need to solve the case leads her to operate outside the law.

A young diver is found dead under the ice of a frozen mountain lake, but her autopsy casts doubt on the circumstances of her death. Meanwhile, her boyfriend remains missing.

A German plane dating from World War II is found in the mountain lake where two young divers were murdered. Rebecka and Anna-Maria close in on a dark family secret that is being protected at any cost.