Sam and Dean ask Castiel to send them back in time so they can meet Samuel Colt himself. While Sam is a bit reluctant to time travel, Dean is beside himself with excitement to return to the Wild, Wild West. Watch free, streaming full episodes of Supernatural on cwtv.com. Supernatural Video: Watch supernatural full episodes, previews, clips, interviews and more video. Supernatural stars Jared Padalecki as Sam Winchester and Jensen Ackles as Dean Winchester. In Supernatural, Sam and Dean cruise America’s highways in their 1967 Chevy Impala, battling supernatural threats.