Frontierland

S6, E18: While searching for a way to defeat Eve, Dean stumbles upon the journal of Samuel Colt (guest star SAM HENNINGS) in the Campbell library. Realizing Samuel might have the answer to their problems, Sam and Dean ask Castiel to send them back in time so they can meet the man himself. While Sam is a bit reluctant to time travel, Dean is beside himself with excitement to return to the Wild, Wild West.