Dekalog: Nine is the ninth part of Dekalog, the drama series of films directed by Polish director Krzysztof Kieślowski for television, connected to the ninth imperative of the Ten Commandments: "Thou shalt not bear false witness against thy neighbour". A man who has become impotent discovers that his wife has a lover. A minor character in this film, a young singer with a heart condition, inspired Kieślowski's and Piesiewicz's next film, The Double Life of Véronique.