A vicious, unpredictable prison escapee abandons his injured partner, ambushes a highway patrolman, and uses the patrolman's uniform and gun to hijack a school bus in a daring attempt to escape his pursuers.

Two thieves steal a $100,000 computer and demand that amount as ransom in exchange for its safe return.

Tragedy results when an impatient traveling salesman refuses to heed numerous warnings concerning his predilection for speeding and taking chances while driving.

An innocent man who unknowingly accompanies two acquaintances on an armed robbery flees and finds himself pursued by the Highway Patrol and by one of the revenge-seeking felons.

Dan Mathews and his officers assist a county sheriff in closing down a club that offers illicit gambling.

A series of fraudulent insurance claims is discovered after Dan Mathews and his officers learn that the "accidental" death of a migrant worker was actually a homicide.

Dan Mathews is determined to find out why the residents of a small town are behaving suspiciously and anxious to see him leave.

Dan Mathews and his officers race against time to find a stolen oil indicator device that contains potentially lethal radioactive pellets.

Dan Mathews has reason to suspect the worst when a courier with a criminal record disappears with $31,000 after an automobile accident.

A young man is put in the uncomfortable position of trying to cover up his father's theft of automobile accessories.

Dan Mathews personally takes on the task of protecting a former crime boss who is scheduled to testify before a grand jury.

A "transportation maintenance service" provided to trucking companies by an apparently legitimate businessman proves to be little more than a protection racket.

Dan Mathews escorts a crusading senator to the scene of his hearings after he receives information that a prominent racketeer plans to murder him.

A recovering addict gives Dan Mathews and a state narcotics agent information that helps them identify an exclusive resort as a front for the distribution of heroin.

A scheming woman takes advantage of her husband, her paramour, and a complete stranger in an attempt to flee the U. S. with $53,000 in stolen funds.

An injured felon discovered in a mountain cabin leads the Highway Patrol helicopter on a difficult chase in treacherous terrain.

Dan Mathews utilizes polygraph testing to identify the individuals who are responsible for the violent robbery of an elderly motel owner.

A highly regarded Highway Patrol officer tenders his resignation after he finds himself unable to subdue and arrest his brother (an escaped prisoner).

Three men rob a series of banks in coastal towns, then pose as fishermen in order to escape in a boat piloted by their leader.

Dan Mathews must cope with a family's effort to protect an emotionally fragile young woman who fled after striking a pedestrian with her car.

Car thieves purchase wrecked vehicles and transfer the VIN plates to stolen ones in order to escape detection.

A distraught engineer sets out on a suicide mission to destroy the chemical plant at which he was formerly employed.

When a ranger checks the woods where a plane disappeared, it results in his murder and in the discovery of a kidnapped woman.

The Highway Patrol helicopter pursues a smooth-talking but ruthless murder suspect who is trying to escape with a hostage over little-used desert roads.

Three thieves use a counterfeit armored car and stolen uniforms to steal $29,000 from a supermarket. The leader of the group becomes increasingly unpredictable and prone to violence as Dan Mathews and his men close in.

A patient parolee decides the time is finally right to attempt the recovery of $250,000 stolen in an armored car robbery.

A café owner's grudge against motorcyclists leads to the accidental death of a Highway Patrol officer.

An escapee from a mental hospital is the primary suspect in the violent death of a farmer.

An alert boy is able to give Dan Mathews information that provides a critical break in the pursuit of a recidivist thief.

A man who picks up a hitchhiker is accused of complicity in an armed robbery when coincidence and circumstantial evidence point strongly toward his guilt.

A gunman and his female hostage unwittingly wander into a designated blasting area.

Dan Mathews and his officers attempt to ensure the delivery of life-saving gas gangrene serum to a 10-year-old victim.

A Highway Patrol officer is murdered while pursuing a car stolen from a lonely bookstore owner.

Two thieves attempt to steal valuable paintings and demand ransom of $500,000. but they are forced to commit murder when the plan goes awry.

Fearing an operation, a resourceful boy with damaged eyesight manages to stay just a step ahead of the Highway Patrol's efforts to return him safely to his parents.

A botched gas station robbery results in the murder of a Highway Patrol officer and the abduction of a farmer and his wife.

A woman's ill-advised attempt to save her former fiancé from a murder conviction results in the realization that the actual killer may still be at large.

A poor prospector arouses suspicion when he suddenly begins paying off long-standing debts from a large roll of new $100 bills.

Dan Mathews and Sergeant Corey spend Christmas Eve searching for a lost six-year-old girl.