CMT | 9:00 pm

This cable Western is one of the most-watched scripted shows on television, so its legions of fans are never happy when a season reaches its end, as Season 3 does tonight with a finale called "The World Is Purple." Certainly they can take solace from the fact that Paramount Network already has ordered Season 4, and cast member Josh Holloway, who joined the show this season as a new adversary for leading man Kevin Costner's character, promises "a crashing, wild finale."