Director Steno (birth name: Stefano Vanzina) is best known as a director of comedy (e.g. films with Bud Spencer and Terence Hill), but this crime thriller is everything but a comedy. It tells the gripping story of an organized vigilante group that kills criminals who couldn't be convicted by the police. Enrico Maria Salerno is brilliant as the police officer who tries to discover the big ones behind the vigilante group. Mario Adorf is convincing as ever - once more portraying a rather dubious district attorney. This Italian-German co-production is also remarkable for singer Jürgen Drews who plays one of the criminals that fall victim to the vigilantes. All in all, "La Polizia Ringrazia" delivers impressive social comment and handles the topic with a complexity one rarely sees in a crime thriller. Highly recommended. imdb comment