Blue, White and Perfect

Private detective Michael Shayne (Lloyd Nolan) takes a job at an airplane manufacturing firm in order to look for saboteurs. On his first day, a load of industrial diamonds are stolen, and Shayne tracks them all the way to Hawaii and a gang of German crooks.

This is a fun, breezy mystery despite the heavier implications of the war. Nolan is funny and charming, and his detective is a morally ambiguous hero, such as when he defrauds his girlfriend (Hughes) out of a thousand bucks so that he can pay for a pleasure cruise to trail his quarry. Yeah, it was for a good cause, but most guys who do that to a girlfriend end up the subject of somebody else's murder mystery. The supporting cast is good, particularly Helene Reynolds as an old acquaintance of Shayne's, and Reeves as a shady Latin salesman.