"The Decalogue" is a Polish film series, originally made as a television miniseries, directed by Krzysztof Kieślowski and co-written by Kieślowski with Krzysztof Piesiewicz, with music by Zbigniew Preisner. It consists of ten one-hour films, each of which represents one of the Ten Commandments and explores possible meanings of the commandment—often ambiguous or contradictory—within a fictional story set in modern Poland. The series is Kieślowski's most acclaimed work and has won numerous international awards, though it was not widely released outside Europe until the late 1990s. Filmmaker Stanley Kubrick described it as the only masterpiece he could name in his lifetime.
Though each film is independent, most of them share the same setting (a large housing project in Warsaw) and some of the characters are acquainted with each other. There is also a nameless character (Artur Barciś), possibly supernatural, who observes the main characters at key moments but never intervenes. The large cast includes both famous actors and unknowns, many of whom Kieślowski also used in other films. Typically for Kieślowski, the tone of most of the films is meditative and melancholy, except for the last one, which (like Three Colors: White, which features two of the same actors) is a black comedy.
The experience of watching "The Decalogue" is so compelling and powerful that the film critic Kenneth Turan wrote that to see this film was "nothing less than a privilege".