Callie and Arizona examine their marital problems and what’s contributed to them. Meanwhile, Callie devotes herself to the veterans’ project, Arizona strives to impress Dr. Herman, and Richard seeks guidance…

Blair and Chuck face-off when the both set their sights on an item up for bid at Sotheby’s. Serena begins to think that Carter may have returned to his old…

Penny buys Leonard and Sheldon “Star Trek” collectibles as a thank-you, leading Sheldon to be haunted by Mr. Spock. Meanwhile, Raj decides he has met the “Future Mrs. Koothrappali” after…