Mike Royce, Becket's former police mentor, who lost his bounty-hunter license when she arrested him, is murdered while visiting New York, possibly by a fellow passenger from L.A. The captain takes her off the case but she uses extant leave. Castle comes along, having to visit his book's movie set anyway. Informally backed up by Ryan and Esposito, they soon find Royce must have been after the manufacturer of the dissolving type of bullet he was killed with. The trail of arms-dealings and new crimes leads back to New York, fortunately as LAPD detective Kyle Seeger, who follows, wants them out as much as Montgomery ordered Becket back.
Did You Know?
Kelvin's voice recognition key phrase, "the power of sound compels you", is a twist on the Catholic Exorcism Rite chant, "The power of Christ compels you". See more
When Beckett comes out of the pool, a hotel employee gives her a pool skirt. When she swings it around her hips, water droplets fly out of the skirt meaning that it was already wet. That means it wasn't the first take and Stana had to put it on multiple times before. See more
[pointing gun at an injured Royce who is lying on the ground injured
You should have stayed out of this, Royce.
You have no idea the hell that's about to rain down on you.
[unmoved and unconcerned
References To Live and Die in L.A.
The Other Side
Performed by Sloan See more