Will Capt. Gates and the team at the 12th precinct be able to help Kate when she meets a dangerous man from her past while undercover? And why isn't Rick in any of these photos from "In the Belly of the Beast" set to air Monday, March 3rd on ABC?

Esposito always has Beckett's back. How will he feel about her going undercover without her team?

Esposito and Ryan don't look happy when they find out Beckett's going undercover. Will they be able to help when the operation goes horribly wrong?

Is this the man who pulls Beckett in to a deadly undercover Narcotics operation? "In the Belly of the Beast" is the 17th episode of the show's sixth season.

Beckett comes face to face with a dangerous person from her past. Will she get out of her undercover operation alive?

Beckett gets pulled into an investigation gone bad and includes a dangerous person from her past on Castle.

Beckett looks concerned about whatever she's walking into on the new episode of Castle airing Monday, March 3rd on ABC.

How does Capt. Gates feel about sending Beckett into the middle of an undercover operation on Castle? "In the Belly of the Beast" airs Monday, March 3rd on ABC.

Things go horribly wrong for Beckett during an undercover investigation on Castle. "In the Belly of the Beast" is the 17th episode of the show's sixth season.