Jim Cole, heir to a mining operation, takes over the mine, which is suffering from unexplained low production, and is facing a strike by the miners. Jim will soon loose the mine if production doesn't increase and the sabotage continues. Mary Norsen, office-secretary, accidentally learns of a plot by Fred Johnson to wreck the mine and force Cole to sell his coal-mine. She and her brother, Joe, join Cole in his fight to stop Johnson.
An expedition sets out to darkest Africa to find the fabled City of the Dead, and must battle thick jungle, hostile natives, wild animals and a deadly epidemic.
Two young lovers caught up in the underworld decide to get out and go straight, but a gang leader has other plans for them.
Reporter Speed Morgan helps Flash Barrett escape from the police and this gets him into Flash's gang where he poses as a gangster. Flash and his gang head west guning for Bill Miller who failed to send some diamonds on to Flash. Speed hopes to bring Flash to justice but is in trouble when his true identity is revealed.
Lawyer Creech is after the ranch of the dying Cartwright. First he brings in Cahill to pose as the only living relative. Then when the Tonto Kid finds platinum on the ranch, Creech frames him for murder.
A gang of robbers steals the deed to the Pecos Ranch and kill the family. The young son escapes, and years later he returns to the ranch to find the killers and reclaim his property.
A cowboy whose friend has been swindled out of his ranch and then murdered must take care of the man's son, then he goes after the killers.
The story of the rise of boxer Joe Thomas, which paralleled the life of Joe Louis.
Cowboy puts on a black mask and a black outfit to fight a gang of land-grabbing crooks.
Bandits lead by Matt the Mute enter a bar and kill multiple people. Randy Bowers comes to town and is framed by Matt the Mute, who is working with the sheriff (who doesn't know Matt is really a criminal). Randy escapes with the help of the niece of the dead owner of the bar. Bowers ends up running from the sheriff, and ends up in the cave in which the bandits have their hide-out…
Jolley is the leader of the Devil's Brand gang of rustlers. When Molly Dawson sends for the Texas Rangers, Tex, Jim, and Panhandle arrive pretending not to know each other. But eventually their identities become known and they are captured by the gang.
Chris Morrell, the guardian of half-Indian girl Nina, is helping her find her missing white father. so she can cash in on her late mother's oil lease. Outlaw Sam Black is after the girl and her father as well. Besides dealing with the Black gang, Morrell has to find another robber, Jim Moore, who switches clothes with him after he finds Chris unconscious from a fight with Sam Black. Along the way, he meets a lady who's the sister of Jim Moore, another bad hombre who's in cahoots with Jim Moore, and an old friend who takes in Nina and helps Chris locate Nina's father and fight off the various desperadoes
