How many movies have Kevin Kasha and Sarah Butler collaborated on?

They have worked on 3 movies together! Their first movie together was I Spit on Your Grave (2010) and was their highest rated movie together. They have not worked together since I Spit on Your Grave III: Vengeance Is Mine (2015). They are most known for their horror films together.

Crew
Co-Executive Producer
Role
Jennifer Hills / Angela
Crew
Associate Producer