A serious warning against neglecting any symptoms which might indicate cancer. Detailed pictures of various stages in the development of this disease are shown, and the means to combat it are described.
| Production company | Preben Frank Film for Kræftens Bekæmpelse og Dansk Kulturfilm |
| Distributor | Landsforeningen til Kræftens Bekæmpelse |
Directed by
| Carl Th. Dreyer | Director |
Screenplay
| Carl Th. Dreyer | Screenwriter |
| Carl Krebs | Screenwriter |
Produced by
| Ib Koch-Olsen | Production Manager |
Cinematography by
| Preben Frank | Director of Photography |
Music by
| Peter Deutsch | Composer |
Others
| Jens Nielsen | Expert - Consultant |
| Carl Krebs | Expert - Professor |
| Ekkert Petersen | Expert - Consultant |
Cast
| Carl Krebs | The Doctor |
| Alberth Luther | Speaker |