A Stumped insurance company is forced to re-hire the most expensive, most big-headed, but best arson investigator to solve a string of major losses.

Edmund Lowe plays his usual dapper character who is smart but also a bit smug and a know-it-all. However, he has a bit charm with it. It's a steadily moving mystery thriller centred around a pyromaniac, and despite the fiery subject, it is not too serious, and has a mix of romance and comedy as well as mystery. The dialogue is snappy with nice witty comebacks. Ann Southern also stars as Lowe's romantic interest and is a suspect due to her turning up at every arson.

Somebody at Columbia must have been looking into a crystal ball when they developed this plot line about a string of fires caused as a result of arson caused by chemicals added into the structures a variety of big businesses and a span of time after which either nature itself caused the building to catch on fire or a simple phone call caused an explosion. Edmund Lowe is an arson investigator who puts the pieces together and becomes suspicious of the young blonde (Ann Sothern) who seems to be around every time this occurs. At first, he believes it only to be coincidence, but as time goes on and their acquaintance turns into romance, his suspicion grows.

Edmund Lowe gives a very clever performance, his characterization wry and sardonic. An amusing factor is his plethora of street spies including an aging apple seller, a one-legged warehouse supervisor and a blind man. The chemistry with Southern has improved since their first paring two years before ("Let's Fall in Love"), and she's actually showing some of the comic skills that would aid her in other films and subsequently on T.V. The script keeps you guessing who the guilty party really is, and there is enough intrigue along the way to keep you hooked, not to mention the parallels with the unfortunate terrorist attacks at the recent Boston Marathon.