Jig-Saw is a 1944 British short public information drama WWII film. It features Jimmy Hanley, Frederick Piper, and Dinah Sheridan.
Scraps of information are gathered and pieced together by an enemy who lurks in the shadows, proving that nowhere is safe to discuss sensitive wartime information on the home front. It tells of the dangers of careless talk, the like of which was instrumental in the sinking of the ship, HMS Hibernia.