With his assistant, Laura Hutchinson, Dr. David Conway develops a device to advance the fledgling science of earthquake prediction. After forecasting a large trembleor that will rock California within twenty-four hours, Conway cannot persuade the Governor to act. When the prediction proves true and further tests indicate that there are more quakes to come, Conway and Laura seek to perfect their device. Subsequent tests deep within Carlsbad Caverns discover an unknown element—E-112—that is responsible for the earthquakes and threatens to destroy the globe if it ever reaches the surface. The team determines that with only four weeks until Armageddon, the race is on to neutralize the killer element before it takes a devastating toll.

A female lawyer sets up her own practice but only achieves success as an attorney for the mob.

Briefly switching gears in 1942 and 1943, western star Charles Starrett made a handful of "northerns" in which he played a Canadian mountie. In Law of the Northwest, Steve King (Starrett) supervises a road-construction project designed to transport war materials to the Aleutians. Problems arise when a crooked contractor decides that his interests are more important than the war effort.

In this western, a lonesome cowpoke trots into a town and helps clear his pardner's name. The trouble began when the friend was framed by the leader of the Cattlemen's association who made it seem like he was a rustler. Because the friend was an ex-con, the evidence against him seems airtight. The wandering hero must work extra hard to prove his friend's innocence.

Gene Autry and his sidekick Frog look into a phony oil scam being perpetrated on a mission orphanage.

The Three Mesquiteers convince a group of settlers to exchange their present property for some which, unbeknownst to our goodguys, is going to be worthless. They are captured before they can warn the ranchers.

US Marshall Vance is assigned to rid the Oklahoma Territory of outlaws.

After some gun play with a posse, the James Gang head for Quinto in a section of land which is not a part of America. Anyone there is beyond the law so the town is populated with outlaws. Next to arrive is Sheriff Rowley, following his brother whom the Gang have brought in injured. Rowley has no authority and gets on well enough with the James boys but is soon involved in other local goings-on, including a move to vote for annexation with Oklahoma which would allow the law well and truly in.

When a man dies of a heart attack, a stage and radio mentalist believes he has willed him to die because he was angry with the man. Riddled with guilt, the mentalist cancels further shows, breaks off his engagement to his female partner, who can read minds while in a hypnotic trance, and takes refuge in the eerie wax-museum-cum-home of another woman friend.

A wealthy family is blackmailed. Murder results. And a nurse at the scene of the crime is determined to figure out who-done-it.

A police detective uses his girlfriend to track down a homicidal maniac.