In the latest episode of The Big Bang Theory, "The Triangulation Separation"—airing on Thursday, Jan. 18 at 8/7c on CBS and CBS All Access—Raj ( Kunal Nayyar) gets caught in some unwanted domestic drama when he finds out the woman he's dating, Nell (Beth Behrs), has a very upset husband, Oliver (Walton Goggins).
Meanwhile, Sheldon ( Jim Parsons) rents his old room back for a quiet place to work, and he drives Leonard ( Johnny Galecki) up the wall with his model tenant behavior.
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Will Raj be able to get himself out of this worst-case "threesome"?
And will Leonard make peace with the new and improved Sheldon?
Watch all-new episodes of The Big Bang Theory on Thursdays at 8/7c on CBS and CBS All Access.