How many movies have Iris Kiefer and Matthias Tiefenbacher collaborated on?

They have worked on 3 movies together! Their first movie together was The Man at Her Side (2008) while their highest rated movie together was Inspector Dupin: Brittany Calling (2014). They have not worked together since Inspector Dupin: Brittany Calling (2014). They are most known for their tv movie films together.