The Secret of Blood | |
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Directed by | Martin Frič |
Written by | Vladimír Neff Otakar Kirchner Jan Werich Martin Frič |
Starring | Vladimír Ráž |
Cinematography | Jan Stallich |
Edited by | Jan Kohout |
Music by | Dalibor C. Vačkář |
Production company | Studio uměleckého filmu |
Distributed by | Československý státní film |
Release date |
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Running time | 101 minutes |
Country | Czechoslovakia |
Language | Czech |
The Secret of Blood (Czech: Tajemství krve) is a 1953 Czechoslovak biographical drama film directed by Martin Frič about Czech doctor Jan Janský who discovered and classified the four different blood types.[1] It competed at 14th Venice International Film Festival.