How many movies have Riccardo Petrazzi and Sisto Brunetti acted in together?

They have worked on 3 movies together! Their first movie together was Killers Are Challenged (1966) while their highest rated movie together was The Cynic, the Rat & the Fist (1977). They have not worked together since The Cynic, the Rat & the Fist (1977). They are most known for their thriller films together.