Trivia: This episode was originally scheduled to air after "The Fast and the Furriest." Because of its subject matter, in light of the bombing at the Boston Marathon, it was postponed for a week and "The Squab and the Quail" was aired in its place.
Trivia: When Castle is sitting in holding, and Jerry Tyson shows up to taunt him, Tyson's cop disguise has a nameplate with "J. Rook" on it. This is a reference to Jameson Rook, the fictional character in Castle's Nikki Heat books that he based on himself.
Trivia: Chris McKenna appears in this episode in a supporting role. As a teenager, McKenna played Joey Buchanan on the soap opera One Life to Live; when he left the show, the character was aged a couple of years and Nathan Fillion was cast as his replacement.
Trivia: The voice of Oracle, the computer on the "Nebula 9" ship, is provided by Stana Katic.
Trivia: When Ryan and Esposito are searching for Jones the bodyguard, the man they first approach is Kris Brkljac, to whom Stana Katic has been married since 2015. (00:05:35)
Answer: The networks are now having winter breaks. A mid season end of new episodes, when they come back after the new year, it picks up as if several months have gone by. Beckett suggested Valentine's Day as a "chick flick" to watch as she is moved in. Also some episodes are not scheduled to air in order.