Peter was a confirmed loner and cat hater, until he was given a small, grey (and impeccably handsome) kitten with folded ears by his then girlfriend. The girlfriend went but Norton stayed - in fact, he and Peter became inseparable. Trotting along beside him down the street having his own chair in restaurants or sitting on Peter's lap on plane...
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.