The Big Bang Theory Season 7 Episode 15: The Locomotive Manipulation

CBS has released a sneak preview for The Big Bang Theory Season 7 Episode 15, which is called "The Locomotive Manipulation." The sneak preview is a compilation of scenes from the episode, which revolves around the gang going on a locomotive ride for Valentine's Day. Upon entering the train, Sheldon pronounces, "Best Valentine's day ever, as soon as I confirm there are no hobos aboard."  On the train, Sheldon appears to meet his soul mate, who shares his love for fun facts about trains. In "The Locomotive Manipulation" episode, love is in the air when Sheldon and Amy join Howard and Bernadette for a trip to wine country.  Meanwhile, Leonard and Penny must rush Raj's dog to the vet. "The Locomotive Manipulation" episode is directed by Mark Cendrowski with story by Jim Reynolds, Steve Holland and Tara Hernandez and teleplay by Steven Molaro, Eric Kaplan and Maria Ferrari . "The Locomotive Manipulation" episode of The Big Bang Theory airs on Thursday, February 6, 2014 from 8:00 PM to 8:31 PM ET/PT on CBS.