Johan Widerberg

Evert Baackstromis a rock star among cops. Starring as a TV expert doesn't help his ego or reputation. He thinks he's a genius, and he is, at solving crimes. When a woman's skull is found, it seems she was murdered recently, but DNA points to her death in the 2004 tsunami. Prosecutor Hanna Hwassbelieves it's a mistake, but Backstrom sees a case only he can solve: a woman who has died twice.

Under the glow of a full moon, a sadistic murder is committed on Nordkoster Island. A young pregnant woman is buried in the sand and slowly drowns as the tide rises. 25 years later, the case remains unsolved. Rookie police officer Olivia Ronning gets assigned to it during training and becomes obsessed when she discovers that her father, who died years prior, worked on the original investigation.