Romeo, Juliet and Darkness (Romeo, Julie a tma) (1960)

Pavel, a young student living in Prague in 1942, hides a Jewish girl in his apartment building's attic. Amidst the brutality of the occupying German army, love blossoms between the two. He is her only link to the outside world. Then the two are discovered by Pavel's mother, who forces the residents of the apartment building to decide whether Hana can remain.