With Castle set to air an a potentially explosive episode tonight, ABC has released the official description of the upcoming Season 5 finale.

Titled "Watershed," it will feature an interview with a high-profile federal law enforcement agency, one that prompts Beckett to reconsider her future both professionally and personally. Uh-oh.

Based on the first photo posted below, should Castle be worried?

Elsewhere, the body of a young woman will be discovered floating inside the water tank of a skid row flop house, the first of many odd circumstances surrounding her demise.

Click through pictures from the season finale now: