An elderly diabetic is kidnapped and held for ransom by a dishonest employee and his gang. Roy and Dale attempt to find the old man in time to give him the insulin injection he must have to survive.

Roy befriends an ex-convict and gives him a job at the ranch. When several holdups occur, the convict is put in jail, although Roy suspects that someone else is impersonating him.

Roy is abducted by the Wolf gang, but the leader comes down with a case of the mumps which quarantines the whole group and gives the law a chance to subdue the outlaws.

Craig Ormond arrives in town after he supposedly murdered Andy Norton's father. Andy, who is about to be married, postpones the wedding in order to avenge his father's murder.

Dale's nephew Bob idolizes a dreadful gunfighter who is working as a front man for a gang of robbers.

A haughty young woman from Connecticut arrives at the Eureka Cafe seeking her father, who has established himself as Mayor of Red Dog, a nearby ghost town. Dale, who suspects the girl is a ""sweet person in spite of her high-falutin' manner,"" gets Roy to help the ""mayor"" and his daughter to hold onto their property.

A greedy veterinarian plots to murder an old prospector who has been blinded and is using Roy's dog, Bullet, to guide him to his diggings.

Roy and Pat try to learn about a boxer's possible connection with a criminal gang. When Roy frees the boxer from the gang's control, the fighter helps to round up the wrongdoers.

A clever group of confidence men trick Dale into signing a bill of sale to her ranch, which they promptly palm off on an unsuspecting Easterner.

Rustlers who use trucks are ruining small ranchers in Paradise Valley. Roy's first clue as to the identity of the crooks comes when the ringleader tries to sell stolen beef to Dale's cafe.

Tom Larrabee's gun is used to kill a rancher, although Tom swears he never pulled the trigger. Roy believes him and helps to prove his innocence.

Roy and Dale discover the murdered body of the chief of the Acuna Indians near the tribe's silver mine. Earlier, the old chief had told Roy that someone was stealing the silver from the mine. All of the evidence appeares to point towards the trading post operator.

When the Mingo Kid over-powers Roy and changes clothing with him, Roy is taken hostage by outlaw Turk Black to be his partner in the planned robbery of the Mineral City Bank.

The leader of a robbery and rustling gang tells Roy and Dale he didn't steal funds from a school and sets out to find the guilty party.

A peddler named Otis Cooper is in cahoots with robbers who have stolen a payroll and hidden it in a stove in Cooper's wagon. When the peddler sells the stove to Dale Evans, his cohorts go to all extremes to recover it and the treasure it holds.