Castle - Once Upon a Time in the West

Yee-haw! To solve a murder of a woman who was poisoned in Arizona only to die several hours later after getting off a plane in New York, Castle (Nathan Fillion) and Beckett (Stana Katic) head west to honeymoon at a dude ranch in hopes of discovering what led to the young woman's death. Although Castle is far more psyched about the dude ranch than Beckett, the rustic old west adventure grows on the detective (even if she does expect a real honeymoon somewhere down the line).

Despite the goofy set-up, "Once Upon a Time in the West" proves to be one of the more entertaining episodes of the show's up-and-down Seventh Season. Offering centuries old buried treasure, Stana Katic in tight-fitting cowboy gear, and even a showdown between Castle and the killer. The mystery itself is secondary to the trappings of the setting, but it holds up long enough to lead the pair on an unlikely adventure before nabbing their killer. All-in-all it's a rootin' tootin' good time.