How many movies have Doris J. Heinze and Jan-Gregor Kremp collaborated on?

They have worked on 3 movies together! Their first movie together was So fühlt sich Liebe an (2004) while their highest rated movie together was Der Untergang der Pamir (2006). They have not worked together since Vier sind einer zuviel (2013). They are most known for their drama films together.