How many movies have Pheline Roggan and Ralph Thiekötter collaborated on?

They have worked on 3 movies together! Their first movie together was Anna und der Soldat (2005) while their highest rated movie together was Murder on Amrum (2009). They have not worked together since Auf der anderen Seite ist das Gras viel Grüner (2017). They are most known for their drama films together.