Criminals of the Air

After being criticized by the Citizens' League for his inability to cope with a crime wave, Police Captain Haines orders his men in the Homicide Bureau to clean up all their cases, but without violating the constitutional rights of any suspect. Detective Jim Logan is ordered to meet the incoming new-head of the Police Department lab and internal affairs, J.G. Bliss, and takes an instant dislike to her over her attitude toward criminal's rights.

Mary Gillespie is restoring the Col. Gillespie Circus to its former splendor after her father's death. With the help of her publicist boyfriend Jim, the sell-out crowds are returning to the big top. Egotistical equestrian star Senor Martinet, however, holds $60,000 of notes signed by the Colonel and due in 24 hours. When a mysterious shadowy figure is seen on the circus lot, and Martinet is murdered in the center ring during his performance, there are suspects aplenty, including Vindecco, Martinet's badly abused hunchback assistant.

Former police chief Tim Halloran Sr. (Willard Robertson) fully expects his son Tim Jr. (Alan Baxter) to follow in his footsteps, flat though they may be. Instead, the younger Halloran opts for the easy road of crime.

With the increasing popularity of Republic's sagebrush crooner Gene Autry, rival company Columbia found it necessary to add a musical element to this Charles Starrett Western released in early 1937. As Starrett himself was no singer, the studio hired Donald Grayson to warble Lonesome River, Out in the Cow Country and Pancho's Widow, all by Ned Washington and Sam H. Stept.

An evil villain steals a newly invented death ray.

Two newly-appointed postal inspectors, Frank Marshall and 'Slim" Hewitt, set out to track down the sender of a time-bomb to a U. S. Senator and, during their investigation, run across a hooded organization that is terrorizing an American city. They also meet Don Foster, who is loud in his condemnation of the terrorists, and his sister, Nancy, who fears for her brother's life.

Hero Jeff Strong (Starrett) comes to the rescue of a group of victimized ranchers. The villains are a gang of crooked gamblers, who demand a valuable dam as payment for a $50,000 debt. The ranchers hope to earn the money by getting their cattle to market on time, but head bad guy Cash Fenton (Kenneth MacDonald) and his flunkey Lobo (Dick Curtis) intend to prevent this.

Having paid for the education and legal training of his younger brother, Bruce, with the idea that he would become a lawyer and join his business, Frederick Garth, a racketeer posing as an honest businessman, is dismayed when he learns that Bruce has become a G-Man instead.

Government undercover agents William Dennis and Joan Barclay are working to solve the disappearances of girls working as "taxi-dancers" from dance halls operated by Jack Miranda and his henchman Nifty.

The Missing Daughters of the title are innocent young girls who've been led astray by seedy dance-hall operator Lucky Rogers.