The stagecoach, El Dorado's only contact with the outside word, is driven by the most famous liar in the territory, Nugget Clark, who finds it difficult to make the townspeople believe anything he says. When he drives recklessly into town telling about seeing a lone traveler in a buckboard being kidnapped, everyone laughs and declares that old Nugget is at it again. Even Rocky Lane, who rushed to rescue Nugget when his stage horses bolted in their hurry to reach the buckboard, doesn't believe Nugget's story. But when a buckboard driven by a man fitting Nugget's description arrives in town, he thinks he he has been vindicated - but the stranger's denial that he was kidnapped explodes Nugget's tale. Only Rocky fails to laugh, because he knows the man in the buckboard should be Bob Manning - and isn't. Manning, Rocky's old friend and surveying engineer for a railroad company, is being impersonated by someone else. Rocky sets out to solve the mystery of Manning's disappearance.
—Les Adams <longhorn1939@suddenlink.net>