KAREN COULD LOSE VIVIAN; APRIL HAS A GROWN-UP CONVERSATION WITH LUCY; KATE'S BOYFRIEND HAS A FAMILIAR PAST; AND JOSS' ACTIONS COULD DAMAGE HER RELATIONSHIP WITH HARRY, ON ABC'S 'MISTRESSES,' AIRING TUESDAY, AUGUST 2

"Survival of the Fittest" - Alec threatens for full custody of Vivian, sending Karen into a panic. April and Marc find a condom in Lucy's jacket, forcing April to give "the talk." Kate doesn't tell Joss and Harry about her new boyfriend, as it could have serious recuperations. Joss' actions put Jonathan's nephew in the hospital and later causes tension in her and Harry's relationship.

Based on the hit U.K. television series of the same name, "Mistresses" airs TUESDAY, AUGUST 2 (10:00-11:00 p.m. EDT), on the ABC Television Network. The provocative and thrilling drama continues to focus on the scandalous lives of a sexy and sassy group of girlfriends, each on their own path to self-discovery.

"Survival of the FIttest" was written by Sarah Tarkoff and directed by John Stuart Scott.

"Mistresses" stars Yunjin Kim as Karen Kim, Rochelle Aytes as April Malloy, Jes Macallan as Josslyn "Joss" Carver, Brett Tucker as Harry Davis, Rob Mayes as Marc Nickleby and Tabrett Bethell as Kate Davis.

Guest starring are Corinne Massiah as Lucy, Ed Quinn as Alec Adams, Jason George as Dominic Taylor, Justin Hartley as Scott Trosman, Navid Negahban as Jonathan Amadi, Micky Shiloah as Reza, Alanna Masterson as Lydia, Amanda Brooks as Faith, Hilty Bowen as Sophia and Niles Fitch as Noel.

"Mistresses" is executive produced by Josh Reims, Rina Mimoun, KJ Steinberg, Robert Sertner and Douglas Rae. The series is from ABC Studios.