How many movies have Helmut Käutner and Ingrid van Bergen collaborated on?

They have worked on 6 movies together! Their first movie together was Portrait of an Unknown Woman (1954) while their highest rated movie together was Robin Hood, der edle Räuber (1966). They have not worked together since Diary of a Serial Killer (1969).

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Lady Emily, Frau des Sheriffs von Nottingham
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