How many movies have Herbert Knaup and Volker Klüpfel collaborated on?

They have worked on 5 movies together! Their first movie together was Erntedank (2009) while their highest rated movie together was Schutzpatron. Ein Kluftingerkrimi (2016). They have not worked together since Herzblut. Ein Kluftingerkrimi (2016). They are most known for their tv movie films together.