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Castle Episode 4.21 ‘Headhunters’ Official Episode Details

By on April 2, 2012
Castle Logo © ABC Television Network.

Castle Logo © ABC Television Network.

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CASTLE JOINS A COP FROM THE CITY’S GANG UNIT, ON ABC’S “CASTLE”

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Adam Baldwin Guest Stars, Reuniting with Nathan Fillion.

“Headhunters” – With tensions rising between Castle and Beckett, Castle finds himself a new partner — Detective Ethan Slaughter (guest star Adam Baldwin, “Firefly”), a tough and colorful cop from the city’s gang unit. But Castle gets more than he bargained for when Slaughter shows him a grittier side of police work that puts Castle in the line of fire like never before, on “Castle,” MONDAY, APRIL 9 (10:01-11:00 p.m., ET), on the ABC Television Network.

“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: Adam Baldwin as Detective Ethan Slaughter, Michael McGrady as Brian Reilly, Michael Dorn as Dr. Carter Burke.

“Headhunters” was written by Alexi Hawley and directed by John Terlesky.

“Castle” is broadcast in 720 Progressive (720P), ABC’s selected HDTV format, with 5.1 channel surround sound. A TV parental guideline will be assigned closer to airdate.