 Georg RydebergHans Brede | Hans Brede |
 Karin EkelundKristina Brede | Kristina Brede |
 Åke OhbergJan Almer | Jan Almer |
 Börje MellvigDocent Högberg | Docent Högberg |
 Anders FrithiofDirector General Lind | Director General Lind |
 Signe WirffMiss Borg | Miss Borg |
 Ivar KågeThe Doctor | The Doctor |
 Sten HedlundMajor Högberg | Major Högberg |
 Gun AdlerNurse in Brede's Home (uncredited) | Nurse in Brede's Home (uncredited) |
 Gerda BjörneWoman at the Party (uncredited) | Woman at the Party (uncredited) |
| KKarl BorgDoctor (uncredited) | Doctor (uncredited) |
 Edvard DanielssonPriest (uncredited) | Priest (uncredited) |
| SSolveig EkelundWoman in Laboratory (uncredited) | Woman in Laboratory (uncredited) |
 Åke EngfeldtDancing Partner (uncredited) | Dancing Partner (uncredited) |
 David EriksonBeckman, Engineer (uncredited) | Beckman, Engineer (uncredited) |
 Margareta FahlénWoman at the Party (uncredited) | Woman at the Party (uncredited) |
 Arthur FischerDoctor (uncredited) | Doctor (uncredited) |
| EErik ForslundGardener (uncredited) | Gardener (uncredited) |
| GGösta GripMan in Laboratory (uncredited) | Man in Laboratory (uncredited) |
 Helga HallénNurse (uncredited) | Nurse (uncredited) |
| AAnn-Marie HellgrenNurse (uncredited) | Nurse (uncredited) |
 Mary HjelteNurse (uncredited) | Nurse (uncredited) |
 Douglas HågeTicket Salesman (uncredited) | Ticket Salesman (uncredited) |
 Lillebil KjellénWoman at the Party (uncredited) | Woman at the Party (uncredited) |
| BBirgit LinderWoman in Laboratory (uncredited) | Woman in Laboratory (uncredited) |
| MMillan LyxellNurse (uncredited) | Nurse (uncredited) |
| RRolf SandbergMan in Laboratory (uncredited) | Man in Laboratory (uncredited) |
| BBert SorbonMan in Laboratory (uncredited) | Man in Laboratory (uncredited) |
| NNils von BrömssenDoctor (uncredited) | Doctor (uncredited) |
 Eric von GegerfeltMan in Laboratory (uncredited) | Man in Laboratory (uncredited) |
