Italian partisans help a professor sent by the OSS to find an atomic scientist held by Nazis.

A women's prison provides the setting for this drama that centers around a naive small-town woman framed by a man whom she met in a nightclub in the big city. She is not welcomed by the inmates and immediately the prisoners are divided.

A mystery writer is intrigued by the tale of notorious criminal Dimitrios Makropolous, whose dead body was found washed up on the shore in Istanbul. He decides to follow the career of Dimitrios around Europe, in order to learn more about the man. Along the way he is joined by the mysterious Mr. Peters, who has his own motivation.

A mystery woman is a murder suspect's only alibi for the night of his wife's death.