| CCameron S. MitchellSelf - Filmmaker | Self - Filmmaker |
| DDavid T. MitchellSelf - Family Member | Self - Family Member |
| SSharon L. SnyderSelf - Family Member | Self - Family Member |
| SSusanne KnittelSelf - Memory Studies Scholar | Self - Memory Studies Scholar |
| EEmma MitchellSelf - Family Member | Self - Family Member |
| FFlorian SchwanningerSelf - Hartheim Memorial Director | Self - Hartheim Memorial Director |
| PPeter EigeslburgerSelf - Archivist | Self - Archivist |
| HHerwig CzechSelf - Former Director Am Spiegelgrund | Self - Former Director Am Spiegelgrund |
| BBenno Muller-HillSelf - Emeritus Professor of Genetics | Self - Emeritus Professor of Genetics |
| CChristian MarxSelf - Educational Staff | Self - Educational Staff |
| EElizabeth KraulSelf - Memorial Guide | Self - Memorial Guide |
| JJörg WaßmerSelf - Relative of T4 Victim | Self - Relative of T4 Victim |
| AAndreas HechlerSelf - Relative of T4 Victim | Self - Relative of T4 Victim |
| RRobert ParzerSelf - T4 Researcher | Self - T4 Researcher |
| PPatricia Heberer RiceSelf - Senior Historian at the United States Holocaust Memorial Museum | Self - Senior Historian at the United States Holocaust Memorial Museum |
| CChristoph HanzigSelf - Sonnenstein Memorial Guide | Self - Sonnenstein Memorial Guide |
| EEmmeline BurdettSelf - Independent Researcher | Self - Independent Researcher |
| TThomas StöckleSelf - Grafeneck Memorial Director | Self - Grafeneck Memorial Director |
| KKenny FriesSelf - Memoirist and Poet | Self - Memoirist and Poet |
| KKenny FriesSelf - The Institut für Genetik der Universität zu Köln | Self - The Institut für Genetik der Universität zu Köln |
| RRobert Jay LiftonSelf - Author of the Nazi Doctors | Self - Author of the Nazi Doctors |
| GGrzegorz KucharczykSelf - Fort VII Memorial Director | Self - Fort VII Memorial Director |
| PPrzemysław JurkiewiczSelf - Fort VII Memorial Guide | Self - Fort VII Memorial Guide |
| RRebecca MaskosSelf - Freie Autorin and Universität Bremen | Self - Freie Autorin and Universität Bremen |
| FFrauke HempelSelf - - Personal Assistant to Rebecca Maskos | Self - - Personal Assistant to Rebecca Maskos |
| UUta HoffmanSelf - Bernburg Memorial Director | Self - Bernburg Memorial Director |
 Barbara SchulzSelf - Office for Contemporary History and Monument Preservation | Self - Office for Contemporary History and Monument Preservation |
| AAxel DrieschnerSelf - Office for Contemporary History and Monument Preservation | Self - Office for Contemporary History and Monument Preservation |
| AAngela WegscheiderSelf - Relative of T4 Victim | Self - Relative of T4 Victim |
| AAndreas KnitzSelf - Counter Memorial Artist | Self - Counter Memorial Artist |