15 years ago, Simon Meier walked out of his house and was never seen again. With no leads, the case quickly ran cold. Until now.

Because one day ago, politician Bernard Clausen died. And in his cabin on the Norwegian coast, police make a shocking discovery. Boxes of bank notes, worth millions of dollars.

Collecting dust. Chief Inspector William Wisting thinks it could link to Meier's disappearance. But solving both cases will mean working with an old adversary, and delving into a dark underworld - which leads closer to home than he could have imagined.