My Outlaw Brother

Denny O'Moore, an Irish lad from New York, hasn't seen his big brother Patrick for eight years. Rumor has it Patrick now owns a silver mine in Mexico and sends money home to the family in America.

In Border City, Texas, the bandit El Tigre blows up and robs a bank, spreading fear through the border town. He leads a large gang that is wanted on both sides of the border, making him a dangerous foe.

The Mexican Secret Service, unable to infiltrate El Tigre's gang, approaches the Texas Rangers with a plan to lure Patrick O'Moore across the border. They think that turning Patrick could yield money and amnesty and cripple El Tigre's operation.

Ranger Joe Warder is assigned to travel to Mexico and bring O'Moore back to the United States. The mission hinges on convincing Patrick to cooperate and depart under Ranger protection.

On the trail toward Mexico, bandits attack Denny, but Ranger Joe Warder saves him from harm. Joe discovers that Denny is Patrick O'Moore's brother, and the two decide to continue toward San Clemente together.

In San Clemente, Denny meets Carmelita Alvarado, a local woman who Patrick loves but who has no interest in him. Carmelita's aloofness adds tension to Patrick's schemes and motives.

Denny is seized by El Tigre's men, but Patrick, keeping out of Denny's view, saves him. He then orders his own men not to harm Denny and to return him to the United States unharmed.

Patrick later finds Denny and tells him he owes his life to El Tigre, who once saved it. The revelation deepens the mystery around Patrick's loyalties and the extent of El Tigre's influence.

The Americans finally learn that El Tigre is actually Patrick O'Moore in disguise. The revelation reframes everything as a carefully staged ruse to control the situation.

After being held captive, Denny, Joe, and Carmelita escape with the help of a friend who is killed by El Tigre. Joe Warder shoots El Tigre and ends the immediate threat, allowing the group to flee toward safety.

The Americans ride back toward home, and Carmelita decides to accompany Denny on his return. The pair head into the United States as the story closes.