Dick Tracy investigates the theft of a fortune of fur coats, a possible insurance swindle and several murders, all linked to a huge thug who wears a hook in place of his right hand.
Art editor Madeleine Damian carries on numerous loveless affairs. After a failed relationship with advertiser Felix Courtland, the increasingly depressed Madeleine attempts suicide. When Jack Garet, her secretary and former lover, tries to blackmail her, Madeleine resigns and seeks a reclusive life. Neighbor David Cousins befriends Madeleine, but soon Courtland and Garet discover her whereabouts and disrupt her new life.
The dream is unusually vivid: Bank employee Vince Grayson finds himself murdering a man in a sinister octagonal-shaped room lined with mirrors while a mysterious woman breaks into a safe. It is so vivid that Vince suspects it may have really happened. To get the dream off his mind, he goes on a picnic with some relatives. When a thunderstorm forces his party into a nearby mansion, Vince discovers that the bizarre room does exist, and it means nothing but trouble.
A private detective, who has been shot, stumbles into the office of Michael Shayne (Hugh Beaumont), and dies before Shayne can question him. Shayne finds a baggage ticket in his hand. He claims it and finds the checked-bag contains the loot from a robbery. Now, he has about fifty minutes left of the running time to find the crooks, bring them to justice and return the money to the rightful owners. And needs all of it.
Proud, eccentric, and antisocial, Monsieur Hire has always kept to himself. But after a woman turns up dead in the Paris suburb where he lives, he feels drawn to a pretty young newcomer to town and discovers that his neighbors are only too ready to suspect the worst of him.
The local building-contractor Martin Roumagnac is fascinated by the fashionable Blanche Ferrand. To impress Blache, Martin presents her with a villa. However, this ruins him financially. Despite Martin's many efforts for the now femme-fatal Blanche, she is not able to chose between him and the rich consul De Laubry.
When a troupe of showgirls with their impresario and press agent vacation at a Malibu Beach resort, two of them are garroted. Charlie takes on the case assisted by Number Two Son Jimmy and faithful chauffeur Birmingham Brown.
Rancher "Utah" Neyes crosses the border into Canada to meet his partner, only to find that the latter has been murdered by a gang led by "Nails" Nelson. "Utah", with the aid of RCMP Jack Craig and fur-trapper Ivy Jenkins, manages to clear his own name of suspicion and also break up Nelson's fur-stealing and smuggling racket.
A treasury agent on the trail of counterfeit money confides to fellow ocean liner passenger, Charlie Chan, that there have been two attempts on his life.