Dean Cromer

Masterson, an intelligent, business-like protection man, is running what seems to be a legitimate maintenance service. His organization causes the breakdown of trucks on the highway, then he moves in to offer his servicing which will prevent further "accidents."

Dan Mathews, shoots it out with a criminal whose clever escape method is his downfall.

Dan Mathews puts the brakes on high-speed death, when he tracks down hot-rod killers.

Dan Mathews clears an innocent boy of a grand larceny charge at the risk of his own life.

12-year-old Susie Haskell can't hear or speak. When two thieves attack her father, rob his safe and take her as hostage, Susie is petrified with fear - unable to cry for help. Dan uses his well-trained knowledge of the criminal mind to track down the fugitives and return the helpless child to her parents.

The Highway Patrol pinpoints Keith Tobin as a thief and killer. Tobin panics, flees in his car. Chief Dan Mathews commanders a Highway Patrol car, follows in hot pursuit. Neither Mathews nor Tobin realize that Tobin's tiny daughter Sally is hidden in the trunk of her father's car. Dan Mathews nabs the killer before the innocent little girl pays for daddy's crimes with her life.