The bus from Dublin to Limerick has never meant much to the inhabitants of Kilbrody, until a woman steps off it, marches into the pub, and drinks herself into oblivion. When she finally wakes up, several days later, it is to discover that Charlie Finn (who put her to bed), the local garda, and indeed the whole village are talking about her. Who is the woman on the bus? The question is, will she tell them?
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.