Sign of the Cancer (1967)

When Dr. Hahn is found murdered in the hospital’s inspection room, investigators question several suspects: his colleague and longtime lover Dr. Marie Nováková (whom he cheated on with nurse Jiřina), the nurse herself, Dr. Petera (whose career he stymied), a senile patient named Zima, and the inept clinic head. As police sift through truthful and deceptive testimonies, complex professional rivalries and personal entanglements among the hospital staff come to light.

Crime, Drama