Loan Shark was one of several independently-produced films made by George Raft in the early 1950s. Raft plays Joe Gargan, a good guy who pretends to turn bad to trap a gang of usurious loan sharks. In order to convince the crooks that he's on their side, Gargan is forced to call it quits with his sweetheart Ann Nelson (Dorothy Hart). Once he's accepted by the villains, Gargan dreams up an elaborate new method of siphoning money from an unsuspecting public. Inevitably, however, the villains get wise to Gargan's subterfuge, and for a while it looks like curtains for our hero. One of the most appealing aspects of Loan Shark is the no-frills cinematography of Joseph Biroc, who went on to such loftier pursuits as The Towering Inferno.
by Hal Erickson synopsis