Mistresses: "Love Is an Open Door" (3x06 Promo)

Karen grapples with her feelings as she, Alec and Vivian decide exactly how their relationship is going to work. A bad judgment call involving the kids puts Marc in the doghouse with April, driving her closer to Blair. Joss and Harry rebound from their painful break-up in different ways while Calista enacts revenge on a manipulative Luca, on “Mistresses,” Thursday, July 16th on ABC.