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DANA DELANY TO GUEST STAR IN A "CASTLE" TWO-PARTER, SUNDAY AND MONDAY, MARCH 21 AND 22 ON ABC

Reunites with Nathan Fillion from Time on "Desperate Housewives"

Actress Dana Delany ("Desperate Housewives") will guest star in two episodes of "Castle" airing Sunday, March 21 and Monday, March 22 (both nights 10:00-11:00 p.m., ET) on ABC. This will reunite Delany and Nathan Fillion, who played Dr. Adam Mayfair, the younger husband of Katherine Mayfair (Delany) on "Desperate Housewives."

In the special two-part storyline, Delany will play Federal Agent Jordan Shaw -- an insightful and accomplished Federal Investigator who teams with Richard Castle and Detective Beckett to hunt down a cunning and elusive serial killer.

"We're thrilled to have the opportunity to work with such a talented and versatile actress as Dana, and we're grateful to Marc Cherry and our partners at ABC for helping to make this happen," said "Castle" Creator/Executive Producer Andrew Marlowe. "She and Nathan were so great together on 'Desperate Housewives,' we're all excited to see them together again."

Starring in the series are Nathan Fillion as Richard Castle, Stana Katic as NYPD Detective Kate Beckett, Ruben Santiago-Hudson as NYPD Captain Roy Montgomery, Tamala Jones as Medical Examiner Lanie Parish, Jon Huertas as NYPD Detective Javier Esposito, Seamus Dever as NYPD Detective Kevin Ryan, Susan Sullivan as Martha Rodgers, and Molly Quinn as Alexis Castle.

"Castle" is produced by ABC Studios. Andrew Marlowe serves as executive producer/writer, along with executive producers Rob Bowman, Rene Echevarria, Laurie Zaks and Armyan Bernstein.

For more information on "Castle," visit ABC.com