How many movies have Rainer Kaufmann and Stefan Holtz collaborated on?

They have worked on 3 movies together! Their first movie together was Erntedank (2009) while their highest rated movie together was Milchgeld. Ein Kluftingerkrimi (2012). They have not worked together since Milchgeld. Ein Kluftingerkrimi (2012). They are most known for their crime films together.