Coming off a decent, albeit not spectacular episode, Castle will air its third season finale next Monday.
Titled "Knockout," the hour will bring to the forefront new intel on the murder of Beckett's mother. Information comes to light for this detective when a hitman with knowledge of the crime escapes during a court hearing.
How will the episode turn dark? On what cliffhanger will it conclude? Tune in on May 16 and get excited for the finale via the following official preview: