How many movies have Dean McQuillen and Tyler Bishop Harron collaborated on?

They have worked on 3 movies together! Their first movie together was Wrong Turn 2: Dead End (2007) while their highest rated movie together was Scooby-Doo! The Mystery Begins (2009). They have not worked together since Scooby-Doo! The Mystery Begins (2009). They are most known for their thriller films together.