The Secret of Blood 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. It competed at 14th Venice International Film Festival.

The Secret of Blood (1954)
Directed by Martin Frič
Genres - Biography, Drama, History |
Sub-Genres - Biographical Film, Historical Film |
Release Date - Apr 22, 1954 |
Run Time - 108 min. |
Description by Wikipedia
Movie Info
Tags
14th Venice International Film Festival, Jan Janský, Kind
Alternate Titles
A vér titka
HU
Blodets hemlighet
SE
Tajemnica krwi
PL