Astrid Nielsen,worksinthelibraryofthejudicialpolice.SufferingfromAsperger'ssyndrome,however,shehasanincrediblememory,sosheisveryusefulinanalyzingthefilesforongoinginvestigations.Thedistrictcommander,havingnotice dthisability,decidestouseittothefullest,entrustingherwithverycomplexinvestigationswhichhaveremainedunsolvedtodate.Inaddition,alsotoreciprocate,hewilltrytohelpAstridonthebehavioralside,inordertoprovidemutualhelp.