The unknown, large mafia organization is now showing its true face. The pressure that GSI and John Falk and his family have put on the organization, makes them fight back on all fronts. The rule book is thrown out. But to go after Johan Falk's family and trying to kill his wife could be the biggest mistake the organization has ever made. GSI closes up around Johan's family and the final battle begins ...
Five men break into Frank Wagner's apartment. Frank is able to escape and seeks out the help of Johan Falk. Has someone leaked that Frank is working with the police? Frank and John don't know who knows what and whom to trust.
Johan Falk's stepdaughter Nina has gotten in contact with her biological father, Orjan, discovering that he is in debt to an Estonian construction company in Gothenburg, leading to Nina's kidnapping.
Johan Falk hasn't been working for over a year since he resigned from the police. Most of all he wants to move out to the countryside, but fate has a different thought.
After causing a commotion with his last assignment, Falk has been given a desk job, which hardly agrees with his personality, and he ends up accepting an offer from an old friend to buy into a private investigation agency. Another friend of Falk's, Sven, purchased a business in Estonia, and when local gangsters attempted to pressure him into paying protection money, Sven retained the services of Nikolaus Lehmann, a burly private eye, to throw them off his trail. However, Lehmann does his job all too well, murdering the racketeers, and then threatening Sven and his family. With no where else to turn, Sven asks Falk to help him deal with the crazed Lehmann; Falk agrees, but soon realizes he's dealing with a more dangerous man than he imagined when Lehmann kidnaps Falk's wife Jeanette, and then releases her with a time bomb locked around her neck, demanding that Falk hand over ownership of his detective agency to Lehmann.
정의감이 투철한 요따란드 시경의 요한 팔크 경사는 크리스마스 이브에 살인사건에 휘말린다. 그러나 시민을 살해한 범인 레오 고트는 사건 현장에 있던 세 명의 목격자에게 거짓 진술을 하도록 협박하여 구속을 면하게 된다. 이에 격분한 요한 경사는 범인을 찾아가는데, 레오는 요한 경사에게 구타와 협박을 당한 것으로 조작하고, 요한 경사는 구치소에 수감된다. 가까스로 탈출에 성공한 요한 경사는 직접 자신의 누명을 벗겨줄 증인을 찾아내고 목격자들을 설득하려고 한다. 한편 레오는 목격자들이 진술을 번복하지 않도록 수를 쓰는데 우선 니나라는 딸을 둔 목격자 헬렌을 찾아간다. 그 곳에서 헬렌을 죽이려던 레오는 헬렌을 찾아온 여경사 헬렌에게 총을 쏘고, 총성이 보고되자 경찰이 출동하여 레오는 그 자리에서 연행된다. 다시 법정에 선 레오는 그의 변호사를 통해 무죄를 주장하지만, 목격자들은 이제 진실을 밝히고 요한 팔크경사의 결백을 증명하게 되는데...
