Most know Roan Malloy as The Gunfighter, but he keeps his other identity -- U.S. Marshal -- to himself. When women start disappearing west of San Antonio, Malloy is sure kidnappers are selling American girls into prostitution in Mexico. He rides out of New Orleans trailing a coach full of pretty ladies heading for Laredo, and when the outlaws bite for the bait, Malloy will be there to see they regret it.