Twenty years ago, a toddler disappeared from a preschool in Lund. Despite an extensive investigation, the boy was never found. When Chief Inspector Sara Vallén receives a tip that could shed some light on the tragic incident, she and her colleague Torsten Venngren decide to reopen the case. But as they do so, Vallén’s two daughters face troubles of their own.   Klara and Bella have started a student organization to help unaccompanied refugee minors. But their efforts have made them targets for harassment by a group of Nazi sympathizers. The situation takes a shocking turn when a young refugee is found dead with a swastika carved into his forehead. Now, while searching for a boy who’s been missing for decades, Vallén must also hunt down a killer . . .   The third novel in Cecilia Sahlström’s Sara Vallén series,_ Without a Trace_ is a fast-paced crime thriller with its finger on the pulse of Sweden’s contemporary social climate.