Closest Strangers

When Mark receives a letter from his girlfriend asking for help, he assumes she's having trouble from an ex-boyfriend. He hurries to Bristol to help her out, only to find that she's been a voluntary participant in the seedy goings-on of a criminal underworld. But now she's apparently upset a psychotic gangster who becomes convinced Mark's part of a plan to disrupt his business. When Mark gets dragged into the fray it's bad enough, but he won't stand for the innocent woman he cares about getting hurt...