Castle and Beckett pose as newlyweds at an Old West-style resort to discover the truth about a murder victim.
Sidney agrees to lead Regina to the Snow Queen, and Emma insists on tagging along in the hopes of rekindling her friendship with Regina. Meanwhile, David and Mary Margaret interrupt their first date since the baby arrived to track down an escaped Will. In the past, Emma befriends a fellow orphan, Lily, but learns that she's not what she claims.moreless
As the rest of team looks into the death of a toy company's CEO, Castle starts his own investigation after finding a lead in his mysterious disappearance.
While Johnny tries to get a grip on his feelings, Charlie must try to bond with a bank robber.
A missing FBI agent is found dead in an investigation that forces Pierce to face a past unsolved case, and Pierce's therapist grows concerned that the investigation may exacerbate Pierce's condition.
Pierce witnesses the death of a gallery owner, but he comes to believe it was actually a murder. Pierce and Moretti try to hunt down the killer, only to end up in the middle of a daring art heist. Meanwhile, Pierce analyzes his relationship with Natalie.moreless
Jed meets a woman who also "was in treatment", and they become romantically involved. Kate is very nasty to her. Meanwhile, Kate is having an affair with one of the tenants. Ryan meets a mysterious woman who lives in the basement and collects information about missing people.moreless