Peter Breck starred as Clay Culhane, a reformed gunfighter turned lawyer who traveled the New Mexico territory of the late 19th century trying to settle disputes with law books instead of a gun. Clay became a circuit lawyer after all his gunfighter brothers were killed in a shootout.

Clay's headquarters were in the town of Latigo, New Mexico. His friends and colleagues included:

• Russell Johnson as Marshal Gib Scott, a suspicious lawman who doesn't yet believe Clay's given up his gunfighting ways.
• Hampton Fancher as Deputy Lom Gillis
• Anna-Lisa as Nora Travers, the owner of the Marathon Hotel
• J. Pat O'Malley as Judge Caleb Marsh
• Walter Burke as Tim Potter

Screen Captures from Series

Clay Culhane's cases/clients included:

• An old friend who lost his ranch to a unscrupulous foreman
• An ex-lawman with a sick wife who needs a place to recover.
• A man allegedly killed by his mail order bride
• A man accused of murder
• A man accused of robbing a stagecoach
• A dying gunman wants a will to bequeath stolen bank money
• A case representing disputed water rights on a farm
• A war veteran declared dead wants to regain his property
• A injured man falsely chased by a bounty hunter
• A gunfighter who once taught Clay to use a gun