In Old New Mexico

Satan's Cradle was the fourth of producer Phil Krasne's "Cisco Kid" programmers for United Artists. This time, Cisco takes on a frontier megalomaniac, shyster lawyer Steve Gentry, who has taken over a mining town. Gentry's confederate is dancehall girl Lil who is as deadly as she is beautiful. When itinerant preacher Henry Lane is beaten to a pulp by Gentry's goons, Cisco and Pancho move in for the kill.

Jim Bannon and his partner own a stagecoach line. With the coming of the telegraph and the end of the Pony Express, two men plot to take over and get the new mail contract. When Jim's partner is murdered and Jim's name is written in the sand beside the body, Jim is arrested. At his trial Whip brings surprising evidence that clears Jim and the two plotters are soon arrested.

Stodge City is in the grip of the Rumpo Kid and his gang. Mistaken identity again takes a hand as a 'sanitary engineer' named Marshal P. Knutt is mistaken for a law marshal. Being the conscientious sort, Marshal tries to help the town get rid of Rumpo, and a showdown is inevitable. Marshal has two aids—revenge-seeking Annie Oakley and his sanitary expertise.

Dan Evans, a small time farmer, is hired to escort Ben Wade, a dangerous outlaw, to Yuma. As Evans and Wade wait for the 3:10 train to Yuma, Wade's gang is racing to free him.

Jesse W. Haywood (Don Knotts) graduates from dental school in Philadelphia in 1870 and goes west to become a frontier dentist. Penelope "Bad Penny" Cushing (Barbara Rhoades) is offered a pardon if she will track down a ring of gun smugglers. She tricks Haywood into a sham marriage as a disguise. Haywood inadvertently becomes the legendary "Doc the Haywood" after he guns down "Arnold the Kid".

The Kid (Duncan Renaldo) masquerades as a government inspector in this pleasant, and pleasantly tuneful, Cisco Kid series entry. Learning that his old friends have been killed and Manuel Gonzales (Tito Renaldo) wrongly accused of cattle rustling by corrupt district officer Miguel Sanchez (George J. Lewis), the Kid assumes the identity of the murdered government official.

Questions arise when Senator Stoddard attends the funeral of a local man named Tom Doniphon in a small Western town. Flashing back, we learn Doniphon saved Stoddard, then a lawyer, when he was roughed up by a crew of outlaws terrorizing the town, led by Liberty Valance. As the territory's safety hung in the balance, Doniphon and Stoddard, two of the only people standing up to him, proved to be very important, but different, foes to Valance.

When Rocklin arrives in a western town he finds that the rancher who hired him as a foreman has been murdered. He is out to solve the murder and thwart the scheming to take the ranch from its rightful owner.

The Trail Blazers are bringing in a prisoner to stand trial for bank robbery, when several attempts are made to kill him; convinced of the man's innocence, they arrange a trap for the real thieves.

A group of people traveling on a stagecoach find their journey complicated by the threat of Geronimo, and learn something about each other in the process.

In order to obtain a stage coach mail contract, a new road must be built. A gang of outlaws try to prevent the building of the road.

Cisco and Pancho set out to clear their names in a series of stage robberies committed by two thugs who are impersonating them.

A gang of bandits takes control of Tucson in preparation for the arrival of a consignment of gold, with only a band of voluntary soldiers trying to outwit them and save the town.

Double-crossed and left without water in the desert, Cable Hogue is saved when he finds a spring. It is in just the right spot for a much needed rest stop on the local stagecoach line, and Hogue uses this to his advantage. He builds a house and makes money off the stagecoach passengers. Hildy, a prostitute from the nearest town, moves in with him. Hogue has everything going his way until the advent of the automobile ends the era of the stagecoach.

A small-town sheriff in the American West enlists the help of a disabled man, a drunk, and a young gunfighter in his efforts to hold in jail the brother of the local bad guy.

Two investigators for a stagecoach company are assigned to find out why the company's stages keep being ambushed. They discover that the culprits are white men disguised as Indians, and they set out to discover who is behind the plot.