[3] Reissued under the title Thundercloud, the film served as the loose basis for the television series Colt .45 starring Wayde Preston, which premiered seven years later.

Written by Thomas W. Blackburn, author of the lyrics to The Ballad of Davy Crockett, the film is about a gun salesman and gunfighter who tracks down a killer who stole two new Colt .45 repeating pistols leaving a trail of dead bodies behind him.

In the town of Red Rock, gun salesman Steve Farrell demonstrates the new Colt .45 repeating pistols to the sheriff.

The only survivor of the attack, Chief Walking Bear receives care from Steve and tells him about Brett and his gang's plan.

Although she believes that her husband has been forced to work with the outlaws, she soon learns that he is actually plotting crimes with the gang leader, psychotic killer Jason Brett, exquisitely played by Zachary Scott.

After being treated for only a slight wound, Beth regains consciousness and warns deputy Steve Farrell about criminal mastermind Jason Brett's plan to take over Bonanza Creek.

The Indians discover Paul Donovan dead, sitting on a horse, tied to the saddle, shot many times in the back by a Colt .45.

[5] It was the final film for veteran character actor Alan Hale Sr.; however, the previously-filmed Rogues of Sherwood Forest was released afterwards.

When Preston left the series, he was replaced by Donald May as Sam Colt, Jr., who also sold their family's pistols across the West when not momentarily embroiled in a gunfight.