Renate Mannhardt (1920âÂÂ2013), born Renate Kohlstein, was a German actress, tutor, and artist. She starred in Peter Lorre's 1951 film The Lost One,, and starred alongside Ingrid Bergman in Roberto Rossellini's film Fear (1954 film). As an acting tutor, she briefly taught Robert De Niro, and in her later years was a prolific painter, exhibiting in Ireland and abroad.