Beckett's side of her abrupt disappearance is revealed. After receiving a mysterious tip from her past, Beckett is launched into a fight for her life, with a team of mercenaries hot on her trail. While Castle investigates why his wife is on the run, Beckett must figure out who wants her dead, before they can finish the job.

Cast: Nathan Fillion, Stana Katic, Jon Huertas, Seamus Dever, Jason Ambrose, Sunkrish Bala, Devon Elora, David L. King, Alla Korot, Fernando Martinez, Adam Mondschein, Margaret Newborn, Danielle Rayne