What initially looks like a domestic accident is soon classed as murder. Further deaths are to follow and the police direct their attention towards the famous crime author, Arne Dahlqvist.

Crown Prosecutor Ylva Isaksson, who also happens to be former Chief Constable Raúl Morales' significant other, is one of the eight members in the test audience pre-read group and she is starting to notice certain connections, scary connections. Could she be in danger too?

As the investigation proceeds, Chief Inspector Kajsa Rudolfsson and her colleagues are struggling with a new manager, who seems to his own personal agenda. The tensions in the team lead to a period of storm and stress and with all the work on top of this, the Serious Crimes Unit in Halland County is certainly kept busy. But might there light at the end of the tunnel?

Obscure Obsession is the third part of CT Karlsson's crime series called Falkenberg murders.