How many movies have August Schmölzer and Fred Stillkrauth acted in together?

They have worked on 4 movies together! Their first movie together was 21 Liebesbriefe (2004) while their highest rated movie together was Mord in aller Unschuld (2008). They have not worked together since Die Tote aus der Schlucht (2015). They are most known for their crime films together.