Erik, in love with Magda, the fiancée of Georg, his boss, secretly sends her roses every night.
Direction
Martín builds dread through cramped theatrical spaces.
Acting
Jean Sorel's sweaty desperation carries every frame.

Director
Eugenio Martín
Trivia, insights & behind the scenes
Eugenio Martín later directed Horror Express (1972), proving he never met a cramped vehicle he couldn't terrorize.
This obscure curio anticipates the giallo boom by three years—Sorel's stalker-with-a-knife energy would become the genre's blueprint.