Shortly after a crowded New York-bound flight takes off from Stockholm, a bomb threat is found on board. Anonymous hijackers demand that the Swedish government revoke its decision to deport a Moroccan man. If their demands are not met, the plane will explode if it attempts to land. The US and Swedish governments must choose between negotiating with terrorists or pursuing the deportation of a possibly innocent man. Fredrika Bergman returns to liaise between Police Superintendent Alex Recht and the abrasive Eden Lundell of the Security Service's counter-terrorism unit. They soon realise that the plot behind the hijacking is far more complex than anyone thought...