Tombstone Terror

Jimmy Dixon, who has been away from his father's Double O ranch in Border City, Texas for four years, is chased across the border after participating in the Mexican Revolution, but successfully eludes his captors. When he greets ranch hand Soupy Baxter, who has been at the Double O for years, Soupy informs him that the ranch has been in trouble ever since Jimmy's dissolute twin brother Duke returned from college two years before and cattle started disappearing. Since then, Jimmy's father has suffered an attack of appendicitis and has had all of his teeth pulled. Dixon has been prevented from getting well by anxiety over Duke's irresponsibility toward the ranch. Years earlier, Duke stole money from the ranch, but Dixon blamed Jimmy and threw him off the property. Jimmy is convinced that his father will not see him and is planning only to get the two hundred dollars Duke owes him then start a ranch of his own without his father knowing he has returned. Soupy convinces Jimmy, however, that he is all that can save his dying father, and when Duke empties the Dixon bank account then hurriedly catches a train to Arizona, Jimmy agrees to pose as Duke and nurse his father back to health. When Dixon greets Jimmy, believing that he is Duke, his son promises to reform. Dixon is so happy that he sends for Duke's girl friend, Jean Adams, and tells the couple to marry in two weeks. Then, an agent of cattle rustler Regan tells Jimmy to report for a meeting, and Jimmy realizes that Duke has been working with Regan. At Blackie's Bar, where Jimmy goes to investigate him, Regan discusses "their" plan to rid the local ranchers of their cattle, drive them through the Double O's south range, then cross the border the following week. Jimmy beats Regan in a poker game and vows to Soupy to capture Regan's gang. Later, Jimmy is about to tell the unsuspecting Jean his real identity when a woman named Blondie arrives from Phoenix in her car and accuses Jimmy, whom she thinks is Duke, of two-timing her. After Jean runs from the house, Jimmy appeases Blondie by telling her that as soon as he and Regan clear the valley of cattle, he will send for her. Blondie returns to Phoenix and, finding Duke waiting for her, learns from Duke that he has a twin brother. After Blondie tells Duke that his brother has promised to send for her, Duke calls Regan to inform on Jimmy and takes Blondie's car to Border City. Because Jimmy never returned after reporting to Regan, Soupy gets worried, and when Duke arrives, Soupy tells him Jimmy is in danger. Duke, recalcitrant, confesses to his father that Jimmy has been impersonating him and is now in trouble. As Soupy rounds up the ranchers, Duke and his father ride out to Regan's hideout to save Jimmy. Meanwhile, Jimmy fights Regan and three of his men and escapes through a window, but is grazed by a bullet from Regan's gun as he rides away. Believing Jimmy dead, Regan and his men throw his body over a cliff into a lake and ride away to meet the gang members who have started the cattle drive. Jimmy pulls himself onto a rock and retrieves his gun from the hideout as Duke and Dixon arrive. All three then ride out to beat Regan to the pass, where a gunfight occurs amid the stampede. The gunmen retreat behind rocks and when Duke takes a bullet meant for his father, Regan's accomplice shoots him, and Jimmy in turn kills his brother's murderer. As Duke lays dying, he is reconciled with his father and asks that he hold him. Meanwhile, Jimmy and Soupy chase Regan and when Regan shoots Soupy from his horse and is about to kill him, Jimmy challenges Regan to a quick-draw and shoots him twice in the hands. Later, at the ranch, Soupy recovers from his wounded foot and reports to Dixon that only sixteen head of cattle were lost in the raid, and Jimmy and Jean embrace.