Noir from 1947, based on a Graham Greene novel. I prefer his more recent colonial A Quiet American. Richard Attenborough is suitably psycho in the lead role of Pinky, but the credulity of Rose is too much of a stretch (for a modern audience). It was strange seeing a moderately youthful William Hartnell (the first Doctor) as Pinky's last loyal enforcer.
I saw this on the strength of Paul Byrnes's review of the recent remake.