When Roz's silent, compulsive husband refused to discuss his problem, when her children seemed embroiled in their own lives, Roz did the unthinkable - she walked out. She did not know that her children would not understand, would not forgive her. She had one moment of joy, shutting the door, leaving, followed by ten years of guilt. Then the death of the family matriarch Nan reunites Roz, now with a career, a flat...
Criminal investigating officer Hanne Wilhelmsen considers the possibility of a serial killer as she tracks down a series of numbers written in blood appearing on walls all over Oslo.