How many movies have Claudia Luzius and Kirsten Frehse collaborated on?

They have worked on 5 movies together! Their first movie together was Deadly Leaks (2016) while their highest rated movie together was Tödliche Geheimnisse - Das Versprechen (2020). They have not worked together since Enemies: Against the Clock (2021). They are most known for their thriller films together.