Grainy closed-circuit television footage shows a man walking into an Oslo bank and putting a gun to a cashier's head. He tells the young woman to count to twenty-five. When the robber doesn't get his money in time, the cashier is executed, and two million Norwegian kroner disappear without a trace. Police Detective Harry Hole is assigned to the case.

While Hole's girlfriend is away in Russia, an old flame decides to get in touch. Former girlfriend and struggling artist Anna Bethsen invites Hole to dinner, and he can't resist a visit. But the evening ends in an all too familiar way as Hole awakens with a thundering headache, a missing cell phone, and no memory of the past twelve hours. That same morning, Anna is found shot dead in her bed. Hole begins to receive threatening e-mails. Is someone trying to frame him for this unexplained death? Meanwhile, the bank robberies continue with unparalleled savagery.

As the death toll continues to mount, Hole becomes a prime suspect in a criminal investigation led by his longtime adversary Tom Waaler and Waaler's vigilante police force. Racing from the cool, autumnal streets of Oslo to the steaming villages of Brazil, Hole is determined to absolve himself of suspicion by uncovering all the information needed to crack both cases. But the ever-threatening Waaler is not finished with his old archenemy quite yet.