A biographical film about a Czech doctor, Dr. Jánský. The athletically inclined medic Jánský successfully completes his studies. He wants to become a surgeon, but finds himself in Professor Kuffner's psychiatric clinic, where, together with his colleague Kozdera, he tries to uncover the connection between blood clotting and mental illness. They make the surprising discovery that human blood can be divided into four groups and thus prevent it from clotting during transfusions. However, Jánský's discovery is met with misunderstanding by the Czech medical community...
Released in 1953, The Secret of Blood is a drama and history film from Studio uměleckého filmu Praha (Czechoslovakia). It was directed by Martin Frič and written by Vladimír Neff. The cast is led by Vladimír Ráž, Zdeněk Štěpánek, Jiřina Petrovická, Vlastimil Brodský and Svatopluk Beneš. With a runtime of 1h 48m, the film averages 6.5/10 across 2 TMDB ratings.
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