Cole S. McKay

Back on the beat, the Reno Sheriff's Department adds a new member to the force.

Reno helps an ex-Army Ranger from his former unit who is wanted for several murders and the hijacking of pharmaceutical trucks.

A crime lord named Caleb Hooks, whom Walker helped put in prison several years ago, escapes from prison, hell bent on revenge against the Texas Rangers (because Hooks' brother had been shot and killed during a shootout, and he claims it was murder).

A relative of Carlos Sandoval is falsely arrested for a crime and sent to prison. Alex and Walker prove his innocence, but before Hector is released, he witnesses a guard kill another prisoner who wants to blow the whistle on wrong-doing.