Investigation of a Citizen Above Suspicion (1970). Directed by Elio Petri, starring Gian Maria Volonte and Florinde Bolkan. This is a nice little piece of Italian surrealism. Kafkaesque and so direct. Beautifully photographed in Technicolor. The colors are muted but strong. Score by the inimitable Ennio Morricone, which I found bit quirky but, given the material works. Winner of the Academy Award for Best Foreign Language Film. .
A chief of detectives, homicide section, kills his mistress and deliberately leaves clues to prove his own responsibility for the crime.
A little heavy handed politically but all satire is hyperbolic, that is what makes it satire
Highly rated and recommended.
Available on the Criterion Channel on Amazon Prime.