Leave it to a master filmmaker like Krzysztof Kieślowski—known for the Three Colours Trilogy, The Double Life of Veronique, and the miniseries Dekalog (whose sixth episode was expanded into this film)—to take a premise as banal as that of a peeping tom and to turn it into something mysterious and poignant. There are definitely still parts to this story that may not hold up to scrutiny, like its belief in a romantic/spiritual connection that rewards the immature man for barging into a woman’s life. In different hands, this subject matter would just be creepy. In Kieślowski’s, the loneliness of these characters takes full shape.

As young postal clerk Tomek (Olaf Lubaszenko) quickly admits his spying to the older and more jaded Magda (Grażyna Szapołowska), the two are drawn to each other with a combination of fear, pity, and lust. And what Kieślowski does—with the help of cinematographer Witold Adamek’s stunning, intimate frames; and his cast’s subdued sorrow—is move the film away from concerns about consent and control, and to tell a story about what it means to truly be seen and acknowledged by another person. In an existence made up of meaningless routine and temporary relationships, seeing someone else at their most vulnerable feels like lightning.