When bombs explode at the Islamic Cooperation Council’s headquarters in Oslo, detective Hanne Wilhelmsen is on the case in the newest installment of the award-winning series from Norway’s bestselling crime writer Anne Holt—“the godmother of Norwegian crime fiction” (Jo Nesbo).On an early April afternoon, a bomb goes off in the Islamic Cooperation Council’s offices in Oslo, killing twenty-three people. The Police and Security Service suspect an extremist organization to be responsible for the attack, a suspicion that grows stronger when threats of yet another, bigger explosion during the planned celebration of the Norwegian constitution reach the authorities. After years on the outside, wheelchair-bound Hanne Wilhelmsen is back among the Oslo police as a special adviser on cold case investigations. She has no official ties to the Security Service in her new role, but is soon approached by her friend, Billy T., who fears his own son may be linked to the bombings. As she tries to help Billy reach out to his son, Hanne realizes that Oslo is up against forces far more terrible and menacing than ever before, and time is running out.