How many movies have Kevin Kasha and Lisa M. Hansen collaborated on?

They have worked on 4 movies together! Their first movie together was Poison Ivy: The Secret Society (2008) while their highest rated movie together was I Spit on Your Grave (2010). They have not worked together since I Spit on Your Grave III: Vengeance Is Mine (2015). They are most known for their thriller films together.