How many movies have Maurizio Merli and Pier Luigi Santi collaborated on?

They have worked on 4 movies together! Their first movie together was Calling All Police Cars (1975) and was their highest rated movie together. They have not worked together since Blue Tango (1987). They are most known for their crime films together.

Role
Walter Mantegazza
Crew
Director of Photography
Role
Commissario Paolo Ferro
Crew
Director of Photography