•
Robert Gustafsson as Peter Wendel: detective inspector, heads cold case unit •
Louise Peterhoff as Caijsa Bergholm: detective, suspected thief investigated by Internal Affairs, usually paired with Jorma •
Maria Langhammer as Barbro Svensson: former archivist, often joins Peter for field investigations • as Jorma Virtanen: detective, wannabe real estate agent, shunned by colleagues for reporting Caijsa to Internal Affairs, usually paired with Caijsa • as Vera Wendel: Peter and Ann-Marie's teenage daughter, moves between her parents' homes •
Ingela Olsson as Ulla Ståhlnacke: detective chief inspector, Peter's boss •
Peter Gardiner as Ante Olofsson: Internal Affairs detective, Stella's second husband • as Stella Olofsson: Urban's widow, Peter's sister-in-law, Jasmine's mother; later marries Ante. Runs clinic supporting sex workers •
Ville Virtanen as Eddie Eriksson:
Linköping detective; helps investigate Mikael, becomes Barbro's love interest • Ala Riani as Freshteh Laurell: Ulla's assistant • Mimmi Cyon as Jasmine Wendel: Peter's niece, Vera's cousin and best friend • Adrian Macéus as Urban Wendel (12 years old)/Young Urban's voice: Peter's older brother
Season one •
Maria Sundbom as Ann-Marie Wendel: Peter's ex-wife, Vera's mother, public prosecutor, Björn's chief of staff •
Johan Ulveson as Björn Stenius: justice minister, former attorney general; hires Ann-Marie • as Marcus Johansson: Björn's assistant, becomes rival of Ann-Marie •
Peter Carlberg as Mikael Ström: surveyor, murder suspect •
Thomas W. Gabrielsson as Temo Björkman: detective inspector who obtained Klas's confessions to multiple murders, which are re-investigated by Peter's team •
Annika Hallin as Lena Wahlberg: psychotherapist who treated Peter, Lars-Åke, Mikael, and Klas; she used the discredited
recovered-memory therapy; later became a writer • as Stefan Kvarnholt: chief prosecutor during Klas's trials • as Mats Hovfeldt: journalist • Mattias Königsson as Lars-Åke Wall: convicted pedophile, murder suspect • as Kristina Svensson: retired
Hallstavik policewoman, investigated Lars-Åke for murdering a child • Zacharias Boustedt as Peter Wendel (9 years old): Urban's younger brother
Season two •
Samuel Fröler as Ludvig Larsson: police commissioner • as Emelie Skoog: 14-year-old Vilan treatment center resident, also sex worker frequented by Ludvig • as Veronica: detective, leads Conny's murder investigation • as Liselott: Jorma's long-term girlfriend •
Stefan Gödicke as Conny Berg: detective, previously on Urban's squad; murdered • Alexandra Alegren as Jenny Eklund: former police cadet, then prostitute; knew Urban, Conny and Ludvig. Later works as a courier, Simon's mother • Elias Haug as Simon Eklund: Jenny's son • also as Urban Wendel (11-year-old): Peter's older brother • Kristina Paskeviciute as Nicole Hauglund: prostitute, murder victim dumped in a suitcase in
Drevviken lake • Katarina Weidhagen as Birgitta: Urban's landlady ==Production==