Annie is called on to help find three men involved in a train robbery. The manager's son tells his father that he's taking over, believing his father is no longer capable of his job.

Annie and Tagg find a young escaped prisoner and help him prove that he is innocent.

An outlaw poses as a marshal in order to break his brother out of jail.

A spoiled heiress seems powerless to prevent a villainous rancher from taking over Diablo's troubled stagecoach line.

When a mine owner is murdered, Annie tries to help his adopted daughter, a young Indian girl.

An man gets out of prison and returns to Diablo, blaming the town for convicting him for a crime he didn't commit.

The grandson of rich old cantankerous woman arrives to help take care of her, but she doesn't want his help. Along being chastised by the old woman, he becomes a target of men plotting to get their hands on her money at any cost.

When a likeable young man tries to open a gambling hall in town, attracting criminal elements, Annie appeals to his mother to stop him.

When Annie tries to save an old prospector from an attack by outlaws, they think she has learned the secret location of his cache of gold.

A cattleman tries to take over the railroad so that he can control the price of shipping cattle.

When a girl is blinded in the murder of her father, Annie tries to help her identify the killer.

Annie is suspicious of the young woman who comes to town to claim her recently killed uncle's ranch.

When a gunfighter comes to Diablo to get revenge on the sheriff for sending him to prison, Annie sneaks the aging sheriff out of town.

Annie and Lofty figure out how to use marked bullets to identify a bank robber.

Annie's mentor, a proud but aging marshal, is provoked into a hopeless shootout with a young gunman.

Annie thinks that an ex-con suspected of the recent robbery of a gold shipment has been framed.

A dance hall queen who is the eyewitness in a murder trial hides out in Diablo after being threatened by the killer.

A retired gunman trying to live a peaceful life in Diablo is threatened by the brothers of a man he killed.

A crooked gambler sets his sights on a banker recently arrived from the East.

Annie tries to prove that the recent ambush of a group of cavalrymen was not the work of the peaceful Hopi Indians.

A chemist poisons the waterholes on a wild game preserve in a scheme to take over the land.

Annie comes to the aid of a poor young man who she thinks has been framed for the murder of his rich uncle.

Annie goes after a mysterious masked outlaw whose latest victim is a traveling circus.

Annie tries to help an ex-convict proves his innocence so that he can unite with the woman he loves.

When a young driver refuses to testify against his outlaw brother, Annie and Tagg use ventriloquism to trick him into doing the right thing.

Annie tries to find out why a young rancher refused to help stop some fleeing bank robbers.