A beautiful young woman has an incredible story about her outlaw father who got busted out of jail and then met a bloody end. Katherine Lupo believes her dad, a career train robber, was sprung by someone who wanted to set him up for another crime - and then killed him when the job was done. A Texas Ranger believes her and turns to The Loner, to go undercover and find out what was behind Lupo's escape and murder. Posing as a train robber, The Loner finds what he is after: a cold blooded and deadly master criminal. But from the get go, The Loner is fighting for his life, for the lives of men and women on the right side of the law - and one desperate shot to plant an evil man six feet under.