Jonas Strand Gravli as Viljar Hanssen

Anders Danielsen Lie as Anders Behring Breivik

Jon Øigarden as Geir Lippestad

Seda Witt as Lara Rashid

Ola G. Furuseth as Prime Minister Stoltenberg

Maria Bock as Christin Kristoffersen

Isak Bakli Aglen as Torje Hanssen

Thorbjørn Harr as Sveinn Are Hanssen

Marit Andreassen as Prime Minister Aide

Øystein Martinsen as Prime Minister Aide

Valborg Frøysnes as Prime Minister Aide

Thor-Harald Normann as Simon Sæbø

Anders Kulsrud Storruste as Anders Kristiansen

Monica Borg Fure as Utøya Camp Leader

Mathias Eckhoff as Utøya Security

Selma Strøm Sönmez as Bano Rashid

Hilde Olausson as Breivik's Mother

Lena Kristin Ellingsen as Signe Lippestad

Anneke von der Lippe as PST Director

Trygve Svindland as Justice Minister

Trim Balaj as Odd Ivar Grøn

Pål Espen Kilstad as PM's Bodyguard

Håkon Smeby as NRK Reporter

Endre Hellestveit as Security Official

Lars Arentz-Hansen as Security Official

Turid Gunnes as Family Lawyer

Ulrikke Hansen Døvigen as Prosecution Lawyer

Hasse Lindmo as Prosecution Lawyer

Tone Danielsen as Judge Wenche Arntzen

Vivian Hein as Defense Lawyer

Fredrik Stenberg Ditlev-Simonsen as Defense Lawyer

Charlotte Grundt as Detective Anderson

Ingri Enger Damon as Inquiry Lawyer

Mikkel Bratt Silset as Hønefoss Policeman

André Sørum as Hønefoss Detective

Tómas Guðbjartsson as Op Room Trauma Surgeon

Andri Wilberg Orrason as Op Room Trauma Doctor

Eindride Eidsvold as Extremist

Joakim Skarli as Knut Arne Pettersen , Paramedic

Marita Fjeldheim Wierdal as Forensics Officer

Terje Ranes as Parent

Øyvind Venstad Kjeksrud as Parent

Silje Breivik as Parent

Mette Scarth Tønseth as Parent

Ellen Birgitte Winther as Parent

Ole Aleksander Wold Lien as

Tommy Hyving as Security Guard