Hec hunts the killers of his fiancee, Norma Muldoon and her son Andy during a stagecoach robbery. His chief suspect is the son of an old friend and fellow lawman.

A hotheaded young man comes to town looking for his father, who deserted he and his mother many years before. When the father turns up dead Hec tries to prove that the young man is not guilty.

The electric chair is about to make it's Western debut with a captured killer, but someone is attempting to cheat justice. Someone is making annonymous threats that there will be a murder a day until the killer is set free.

Hec sets out to clear innocent Indians and catch the real killers of three ranchers. Color blindness is a strange key to solving the mystery.

A healthy looking young man dies of heart failure, but Hec is convinced that it happened naturally.

The town is buzzing over the impossible dream of man in flight. Two men arrive to test a glider and become suspects in the murder of a rival flyer.

A dead man shot by a lawman becomes a hero, despite the fact he was really a cold-blooded killer. Hec tries to expose the truth about him, and clear the lawman's name.

A crime syndicate comes to town and are victimizing oildrillers who are tricked into accepting loans from the syndicate.

Hec acts as lawyer to a former girlfriend. Savannah is accused of killing the son of the richest man in New Mexico, a powerful man who controls both the Sheriff and Judge.

An aging lawman in the turn-of-the century West finds himself out of step with the times and reluctantly accepts a job as a deputy to an inexperienced college-educated Police Chief in Oklahoma. He uses his brain and primitive beginnings of early-day criminal science to solve crimes.