The next episode of Castle features the entire 12th Precinct dressing up in '70s garb for the sole purpose of interrogating a witness who believes he's still in the groovy decade.

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Castle (Nathan Fillion) and Beckett (Stana Katic) are tasked with solving a three-decade old Mafia case in the next episode of Castle, which is titled That '70s Show. Construction workers discover the body of a New York mobster who had disappeared way back in the '70s. The only witness to the crime is Harold Metzger, an older man who still believes he is living in the '70s.

Therefore, the 12th Precinct dresses up in stereotypical '70s outfits in order to cooperate with him and get him to talk.

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Two new sneak peek clips for the episode have been released, each of them highlighting the dress up portion of the episode. The first clip features Castle in a white suit coat with sunglasses, fully embracing the decade with an enthusiastic "let's boogie!" He escorts Harold into a '70s-style police car that doesn't quite seem to function like it used to.

In the other sneak peek clip, Castle and Beckett are interrogating Harold about what he knows in regard to the dead mobster. Harold insists that he see the mobster's body first before proceeding with questions. Throughout the clip, Harold hurls sexist comments at Beckett, calling her "sweetheart" and "cupcake" while not taking anything she says seriously.

Castle season 6 airs Mondays at 10 p.m. on ABC.

Watch the new sneak peeks for the next episode of Castle here:

Sneak Peek Clip #2

Tags: Castle television ABC