On the next episode of Castle, Beckett (Stana Katic) will feel her life threatened as she goes undercover for a dangerous mission.

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The next episode of Castle season 6 is titled In the Belly of the Beast and it will be a big one for Beckett. She is asked to assist in a Narcotics case but things turn very wrong for her as she is forced to battle some of New York's most dangerous men.

ABC released a sneak peek for the episode, which features Beckett being assigned to the mission, which seems routine at first but eventually takes a turn.

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The clip features Beckett undercover as a drug courier as she walks into an elevator, only to find that the elevator operator is not who he seems. The operator points a gun directly at Beckett and forcefully tells her, "Don't move a muscle."

"Beckett thinks she's pretending to be one person, but discovers that [the criminals] think that she's somebody else completely," Castle creator Andrew W. Marlowe told TV Guide previously. "She has to navigate those waters and figure out who she's supposed to be, and any misstep could get her killed."

As previously reported by Enstars, In the Belly of the Beast will also feature Beckett coming face-to-face with the people responsible for murdering her mother Johanna.

There is no word on whether or not Castle (Nathan Fillion) gets involved in the case at all.

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

Watch the sneak peek for the next episode of Castle here:

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Castle, Television, ABC