How many movies have Elio Petri and Mario Bramonti collaborated on?

They have worked on 7 movies together! Their first movie together was We Still Kill the Old Way (1967) while their highest rated movie together was Investigation of a Citizen Above Suspicion (1970). They have not worked together since Good News (1979). They are most known for their drama films together.

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Bank Customer (uncredited)
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Policeman Sleeping During Dottore's Address (uncredited)
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