How many movies have Gabriela Sperl and Nina Kunzendorf collaborated on?

They have worked on 4 movies together! Their first movie together was Operation Valkyrie (2004) while their highest rated movie together was Tödliche Geheimnisse - Das Versprechen (2020). They have not worked together since Tödliche Geheimnisse - Das Versprechen (2020). They are most known for their tv movie films together.