Krister Kern

Sweden faces a mysterious attack while Alex tries to reunite with his youth love, Anna.

A woman leaves a psychiatric ward after a nervous breakdown, only to start hearing mysterious knocking sounds in her apartment.

Alex is hired as the new investigation team leader. Steinar wanted the job. Maria finds her mom dead. The mom's ex/Maria's dad and boyfriend are main suspects, but the list gets longer. Beck's a near cameo.