Widower Murdoch needs his sons to return home to help him protect the ranch - but he needs detectives to find them! Scott, the elder, is a city boy brought up by his maternal grandpa in refined Boston following the death of his mother in childbirth. Johnny is a gunfighter south of the border, the result of a liaison with a Mexican beauty who hid her son from his father. What will lure them to a different life of cattle ranching in the west? How will these different men get on together? Throw into the mix a pretty young ward and a host of guest appearances and the outcome is a sensational TV western series with great scripts, strong performances and superb plot lines that truly shape out character as well as move the story along.