The pilot of Laredo was an episode of The Virginian called "We've Lost A Train", which was broadcast in April 1965. It was released theatrically in 1969 under the title Backtrack. Reese was previously an officer of the Union Army during the American Civil War. Originally from New Orleans, Chad was in the Border Patrol during the war. He joined the Rangers to search for the gunrunners who had ambushed fellow border patrolmen. Joe was a gunfighter who was at times on the wrong side of the law. He joined the Rangers to obtain protection from a sheriff. Chad and Joe tease Reese about his age: he was in his forties.
The three Rangers are led by Captain Edward Parmalee, played by Philip Carey, who was stern and disciplined. Robert Wolders as Erik Hunter joined the show in the second and final season.
- Peter Brown...Chad Cooper
- Neville Brand...Reese Bennett
- William Smith...Joe Riley
- Philip Carey...Captain Edward Parmalee
- Robert Wolders...Erik Hunter
- Claude Akins...Cotton Buckmeister