When Adrian Fray of the Bar F had been bushwhacked, the town marshal pointed the finger of suspicion at Marty Savern of the Box S Ranch. He had every motive for killing the young rancher. However, since Marty had his alibis strong - or so it appeared - the mysterious murder remained unsolved until Marty's younger brother, Kane, returned home to Battle Mesa Valley.

Kane Savern had to play his cards very close and track down a shadow killer simply called 'Lefty Right.