Complex sentence: Otto Preminger's "Angel Face" was the first of three collaborations between Mitchum and British stage actress Jean Simmons, in which she plays an insane heiress who plans to use young ambulance driver Mitchum to kill for her.
Split into simpler sentences: Otto Preminger's "Angel Face" was the first of three collaborations between Mitchum and British stage actress Jean Simmons. In the film, Simmons plays an insane heiress who plans to use young ambulance driver Mitchum to kill for her.