This great Fritz Lang film is part of the Marilyn Monroe season at BFI Southbank and also screens on 6th June. Details here.
Chicago Reader review:
A love triangle set in a scruffy seaport town, with Barbara Stanwyck, Paul Douglas, and Robert Ryan. The script, adapted from a Clifford Odets play, seems to have roused the realist in director Fritz Lang: the backwater atmosphere is as authentic as it is oppressive. The naturalism of this 1952 film, one of Lang's most underrated, makes an interesting contrast with the wild exaggerations of his Rancho Notorious, made the same year; for the buffs, there's also an early starlet appearance by Marilyn Monroe.
Here (and above) is a compendium of Monroe's appearances in the film.