VIDEO: Sneak Peek - 'Significant Others' Episode of ABC's CASTLE

On an all-new episode of the ABC drama series CASTLE entitled "Significant Others", when a powerful divorce attorney who only represented women is murdered, Castle and Beckett are confronted with a plethora of angry ex-husbands, any one of whom could be the murderer.

Meanwhile, Castle's ex-wife (Darby Stanchfield, "Scandal"), Meredith, moves into The Loft to take care of Alexis while she recovers from Mono, and to make matters worse, Beckett is also forced to move in while her apartment is being fumigated, causing tension, humor and more than a little awkwardness. The episode airs MONDAY, JANUARY 7 (10:01-11:00 p.m., ET) on ABC. Jack Wagner ("Melrose Place") guest stars as a pro golfer whose career went down in flames after a nasty divorce, and Nancy Lee Grahn ("General Hospital") guests as a wealthy divorcee caught in a "War of the Roses"-like struggle with her ex-husband. Get a sneak peek below!

"Castle" stars Nathan Fillion as Richard Castle, Stana Katic as NYPD Detective Kate Beckett, Susan Sullivan as Martha Rodgers, Molly Quinn as Alexis Castle, Penny Johnson Jerald as NYPD Captain Victoria Gates, TAMALA JONES as Medical Examiner Lanie Parish, Jon Huertas as NYPD Detective Javier Esposito, and Seamus Dever as NYPD Detective Kevin Ryan.

Guest Cast: Darby Stanchfield as Meredith, Jack Wagner as Billy Piper, Nancy Lee Grahn as Samantha Voss.

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