
When the unscrupulous Carlos Manning discovers that an old Spanish land grant recently unearthed will leave a huge section of California real estate to the heirs of Don Quantero, he employs Mel Donovan and his killer henchmen to murder them all. That will leave Manning as the sole heir to millions. However, Delores Quantero tumbles to this plot and enlists the aide of two-fisted reporter, Cliff Roberts to save all her relatives

Lorna Gray
Dolores Quantero

Kirk Alyn
Cliff Roberts

LeRoy Mason
Carlos Manning

Roy Barcroft
Mel Donovan
Claire Meade
Maria Martinez

Kernan Cripps
Insp. Grogan
Jimmy Ames
Romero (Nightclub Owner) [Chs. 3, 9]

Eddie Parker
George Tomkins
Tom Steele
Kidnapper Norton / Streetsweeper Blake / MineThug Dow / BombThug Lyons [Chs. 2, 5, 7, 10]

Dale Van Sickel
Thug Murphy / Police Officer Angus [Chs. 7, 8] / Pete (Truck Theft Thug / Bar Thug [Chs. 1, 9, 11]

Fred Graham
Rollins - Killer [Ch. 6]
Tom Quinn
R. J. Riggs (Bomb Maker) [Ch. 10]

The Scarlet Horseman
The Scarlet Horseman

Jesse James Rides Again
Jesse James Rides Again

The Master Key
The Master Key

Mystery of the Riverboat
Mystery of the Riverboat

Flash Gordon
Flash Gordon

Drums of Fu Manchu
Drums of Fu Manchu

The Girl and the Game
The Girl and the Game

Scouts to the Rescue
Scouts to the Rescue

The King of the Kongo
The King of the Kongo

The Phantom Rider
The Phantom Rider

The Wolf Dog
The Wolf Dog

Perils of the Royal Mounted
Perils of the Royal Mounted