The Last Lullaby: Hammarby Book 3 - Hammarby Thrillers 3rd edition

It's the call every officer dreads. Stockholm Criminal Investigator Conny Sjoberg finds a mother and her two young children lying peacefully in bed, their throats coldly and efficiently cut and no signs of a struggle. As Conny and his team get to work they draw a blank on both motive and suspect for these cruel, senseless murders.