How many movies have Horst Friedrich and Siegfried Weiß acted in together?

They have worked on 8 movies together! Their first movie together was Zwischenfall in Benderath (1956) while their highest rated movie together was Berlin - Ecke Schönhauser... (1957). They have not worked together since Der Mord, der nie verjährt (1968). They are most known for their drama films together.