Piet Hoffmann is the Swedish police force's best undercover operative. Not even his family know of his double identity. Yet when a drug deal with the Polish mafia goes fatally wrong, his secret life begins to crumble around him.
Detective Inspector Ewert Grens is charged with investigating the drug-related killing. Unaware of Hoffmann's true identity, he believes himself to be on the trail of a dangerous psychopath.
Hoffmann must desperately maintain his cover; else he is a dead man walking. But, in the doggedly-perceptive Ewert Grens, he has just made the most relentless of enemies.