The first series of the Scandinavian crime drama following the joint efforts of Danish and Swedish police officers to solve murders that take place along the border of the two countries. When a woman's body is found on a bridge connecting Sweden and Denmark, inevitable questions are raised regarding which of the two nations has jurisdiction over the crime and should lead the subsequent investigation. A compromise is reached involving law officers from both Malmö and Copenhagen, the affected cities. Saga Norén (Sofia Helin) and Martin Rohde (Kim Bodnia) will have to put their differences aside and work together if they are to put an end to the designs of a brutal and calculating killer.