| EErla BolladóttirSelf | Self |
| SSævar CiesiekskiSelf (archive footage) | Self (archive footage) |
| TTryggvi LeifssonSelf (archive footage) | Self (archive footage) |
| AAlbert SkaftasonSelf (archive footage) | Self (archive footage) |
| GGuðjón SkarphéðinssonSelf | Self |
| KKristjan VídarssonSelf (archive footage) | Self (archive footage) |
| GGeirfinnur EinarssonSelf (archive footage) | Self (archive footage) |
| GGuðmundur EinarssonSelf (archive footage) | Self (archive footage) |
| HHelga ArnardóttirSelf - Journalist | Self - Journalist |
| RRagnar AðalsteinssonSelf - Sævar's Lawyer | Self - Sævar's Lawyer |
| TThor B. EggertssonSelf - Search and Rescue Team | Self - Search and Rescue Team |
| HHaukur GuðmundssonSelf - Police Detective, Keflavík Police | Self - Police Detective, Keflavík Police |
| SSigurbjörn HaraldssonSelf - Guðmundur's Friend | Self - Guðmundur's Friend |
| HHörður JóhannessonSelf - Reykjavik Police, 1981 - Present | Self - Reykjavik Police, 1981 - Present |
| ÖÖgmundur JónassonSelf - Minister of Internal Affairs 2011-13 | Self - Minister of Internal Affairs 2011-13 |
| HHlynur Þór MagnússonSelf - Prison Guard | Self - Prison Guard |
| PPáll Arnór PálssonSelf - Kristjan's Lawyer | Self - Kristjan's Lawyer |
| HHalldór ReynissonSelf - Journalist | Self - Journalist |
| AArndís SigurðardóttirSelf - Chair, Investigation Committee | Self - Chair, Investigation Committee |
| VValtýr SigurðssonSelf - Chief Investigator, 1974-75 | Self - Chief Investigator, 1974-75 |
| SSigurþór StefánssonSelf - Friend of Sævar and Erla | Self - Friend of Sævar and Erla |
| HHafþór SævarssonSelf - Sævar's son | Self - Sævar's son |
| KKristin Anna TryggvadottirSelf - Tryggvi's Daughter | Self - Tryggvi's Daughter |
| SStefan UnnsteinssonSelf - Sævar's Biographer | Self - Sævar's Biographer |
| ÓÓmar ValdimarssonSelf - Journalist | Self - Journalist |
| ÓÓlafur JóhannessonSelf - Justice Minister (archive footage) | Self - Justice Minister (archive footage) |
| KKarl SchutzSelf - Head of West German Security Police (archive footage) | Self - Head of West German Security Police (archive footage) |
 BjörkSelf (archive footage) | Self (archive footage) |
