How many movies have Matthias Tiefenbacher and Stefan Merki collaborated on?

They have worked on 6 movies together! Their first movie together was Das Haus ihres Vaters (2010) while their highest rated movie together was Schwarzach 23 - Und die Hand des Todes (2015). They have not worked together since Schwarzach 23 und der Schädel des Saatan (2018). They are most known for their tv movie films together.