A none-too-popular (nor good) radio singer, Rita Wilson is murdered while singing on the air in a radio studio. Radio page boy, Frankie Ryan, and his janitor pal, Jeff, solve the mystery for the none-too-sharp police.

A woman doesn't realize that the man she has just married is a gangster. When she is implicated in a murder he committed, she turns to an ex-boyfriend, who is now a park ranger, for help. He hides her out in a cabin up in the mountains, and her husband goes on the hunt for both of them.

Reporter Sue Walker has too much inside information on the local gambling rackets to suit her sweetheart, Detective Lieutenant Jerry Brown, chief of the police Homicide Squad. When the call comes in that there has been a killing at Lefty Ross' place, a notorious gambling joint, Jerry is peeved when Sue beats him there. He discovers that gambler Jimmy Clark was killed as he answered a telephone call, and his body is riddled with bullets but Jerry can't find any weapon. Sue is amazed to see Gloria Cunningham there. Gloria's father is one of the town's leading reformers and she is engaged to District Attorney Richard Sutton. Ross decides to give Sutton all the information he needs and makes an appointment to go to Sutton's home. Once there, Ross is called to the telephone before he can give any information, and is killed in the same mysterious manner as Jimmy Clark.

A love triangle occurs between the publisher's daughter Betty Moody. comic book artist Tim Jones, and the company's wily manipulative manager Hilton Payne. In addition, Betty's dad, Phineas Moody suffers from severe melancholy; and an emergency cure of laughter is required to save his health.

The heirs of Anton Benson are searching Bensonhurst for hidden gold; they are joined by a reporter, a gangster...and a masked fiend known as The Iron Claw.

After a handful of non-formula westerns, Charles Starrett returned to the mixture as before in Thundering Frontier. Starrett plays Jim Fillmore, kind to old ladies, small animals and heroine Norma Belknap (Iris Meredith). In contrast, the villains are kind to no one, least of all struggling building contractor Square Deal Scottie (Alex Callam), whose projects are continually targeted for demolition and his payroll is forever being stolen at gunpoint. A good 25 percent of the film's running time is given over to Bob Nolan and the Sons of the Pioneers, whose C&W croonings are pleasant but a bit much. One of the film's few surprises is that Starrett's perennial screen sparring partner Dick Curtis isn't one of the bad guys.

A delivery boy for a flower shop, who thinks of himself as an amateur detective, finds out that his boss is mixed up with a foreign espionage ring.

A young doctor rejects his older outlaw brother Johnny who put him through medical school by dubious means. The brothers find themselves on opposite sides of a range war between homesteaders and a crooked cattleman.

In 1937 the life in out West has not changed much. The boys are working at the Wyoming ranch of Captain Marvin herding horses which he sells to Kurt Redman. Marvin will not sell any horses to any army, but the boys find out that Redman is a German agent shipping the horses directly to the Third Reich. When Marvin tries to stop Redman, his son Tad, who is studying medicine in Germany, is arrested and held hostage. Marvin must fire the boys as the sneaky German agents take over the ranch, but the boys will not give up their attempt to stop them.

A young boxer finds his life turned upside down when he meets with sudden success in the ring.