Actors : Radoslav Brzobohatý, Jana Brezková, András Bálint, Jozef Adamovic, Directors : Otakar Vávra,
A remake of the 1948 atomic-age film, "Krakatit", by the same director. A scrupulous scientist is in the throes of a serious ethical dilemma after creating a highly-efficient explosive which may bring immeasurable suffering to mankind.