How many movies have Hans Nielsen and Heidi Brühl acted in together?

They have worked on 4 movies together! Their first movie together was Roman einer Siebzehnjährigen (1955) while their highest rated movie together was Hochzeit auf Immenhof (1956). They have not worked together since Freddy und die Melodie der Nacht (1960). They are most known for their drama films together.