Foster is another of those gentleman jewel thieves who have infested the screen since silent days. His cover is that of a mystery writer, and his rival for the priceless diamonds is lady jewel thief Bourne, who is at least as interested in making off with Foster as with the gems. Hinds and
Meek are the police commissioner and jeweler who team up to catch the crooks. They fail, of course, and Foster and Bourne end up in each others' arms vowing to go straight. Pleasant drawing-room mystery played for laughs.