 Marsha HuntMarja Pacierkowski | Marja Pacierkowski |
 Alexander KnoxWilhelm Grimm | Wilhelm Grimm |
 Henry TraversFather Warecki | Father Warecki |
 Erik RolfKarl Grimm | Karl Grimm |
 Dorothy MorrisJanina Paeierkowski | Janina Paeierkowski |
 Richard CraneWillie Grimm as a Man | Willie Grimm as a Man |
 Ruth NelsonAlice Grimm | Alice Grimm |
 Richard HaleRabbi David Levin | Rabbi David Levin |
 Kurt KreugerLt. Gersdorf | Lt. Gersdorf |
 Trevor BardetteJan Stys as a Man | Jan Stys as a Man |
| FFrank JaquetDr. Matek | Dr. Matek |
 Ray TealOremski | Oremski |
 Art SmithStys | Stys |
 Shirley MillsAnna Oremska | Anna Oremska |
 George LesseyPresiding Judge | Presiding Judge |
| EElvin FieldJan Stys as a Boy | Jan Stys as a Boy |
| DDick GordonCourtroom Spectator (uncredited) | Courtroom Spectator (uncredited) |
 Fred AldrichMan at Ceremony (uncredited) | Man at Ceremony (uncredited) |
 Felix BaschNazi Official (uncredited) | Nazi Official (uncredited) |
 Sven Hugo BorgGerman Soldier (uncredited) | German Soldier (uncredited) |
 Janet ChapmanGirl in Marketplace (uncredited) | Girl in Marketplace (uncredited) |
 Wong ChungMember of Tribunal (uncredited) | Member of Tribunal (uncredited) |
| BBill ClausonSchoolboy (uncredited) | Schoolboy (uncredited) |
| EEileen CoghlanTownsman (uncredited) | Townsman (uncredited) |
 Kernan CrippsTownsman (uncredited) | Townsman (uncredited) |
 Frank DarienOld Man (uncredited) | Old Man (uncredited) |
| BBilly DawsonWillie - Age 15 (uncredited) | Willie - Age 15 (uncredited) |
| AAngelo DesfisTownsman (uncredited) | Townsman (uncredited) |
| AArno FreyGerman Officer (uncredited) | German Officer (uncredited) |
| JJoyce GardnerBaby at Table (uncredited) | Baby at Table (uncredited) |
