How many movies have Harry Manfredini and Melanie Kinnaman collaborated on?

They have worked on 3 movies together! Their first movie together was Friday the 13th: A New Beginning (1985) while their highest rated movie together was Crystal Lake Memories: The Complete History of Friday the 13th (2013). They have not worked together since Crystal Lake Memories: The Complete History of Friday the 13th (2013).