The Canadians have discovered a valuable substance called Compound X, which can cure infantile paralysis. When a country at war with Canada learns that Compound X also contains magnetic properties that could aid them in their warfare against the British, they send agents to infiltrate Canada and steal a large quantity of the substance. It's up to Sgt. King (Allan Lane) and his Mounties to track down the agents and put an end to their scheme.

A mad doctor named Zanoff uses a drug to bring himself back from the dead after his execution in prison. Dick Tracy sets out to capture Zanoff before he can put his criminal gang back together again.

Escaped Prisoner 39013 impersonates the rich and influential Horace Granville, allowing him to create a variety of disasters. Fortunately, he is thwarted repeatedly by three daring circus daredevils.

When the murdered body discovered by beautiful, vivacious socialite Melsa Manton disappears, police and press label her a prankster until she proves them wrong.

Thelma and Patsy find themselves in a spooky house inhabited by a nut who is a mechanical genius and has made a robot who does everything. The inventor manipulates the robot's control board from a hidden room. The girls are soon in a panic. Patsy gets into an argument with the robot and loses the match of wits. Blackie Burke, an escaped convict, is using the house as a hideout, and this adds to the problems the girls already have.

Long lost German language version of the Laurel & Hardy film "The Laurel-Hardy Murder Case" When Stan's rich uncle Ebenezer dies and leaves behind a large estate, they think their days of living off the fish they catch are numbered. But they soon learn that Ebenezer has been murdered. All relatives, including Stan, are under suspicion.

A tramp falls in love with a beautiful blind flower girl. His on-and-off friendship with a wealthy man allows him to be the girl's benefactor and suitor.