In the second part of the story begun in “Tick, Tick, Tick…,” the serial killer remains at large and is taunting Castle, Beckett and Jordan Shaw (guest star Dana Delany) to catch him. Delany plays Federal Agent Jordan Shaw, an insightful and accomplished Federal Investigator who teams up with Castle and Beckett to hunt down this cunning and elusive serial killer.
Castle and Beckett get an inside look at the cutthroat world of the New York fashion industry when they investigate the brutal murder of a young model during Fashion Week.
When an Arctic explorer is killed during a polar expedition, the mysterious circumstances of his death take Castle and Beckett from the penthouses of Park Avenue to the halls of the CIA. But Castle’s delight at the case’s many twists and turns soon turns to frustration as he realizes that their elusive killer might just be fooling them all.
The murder of an Assistant District Attorney thrusts Castle and Beckett into the world of ex-cons and escorts. But when Castle’s desire to help a vulnerable call girl endangers the case, Beckett is forced to decide between honoring promises and putting a killer behind bars. Matters are complicated even further when Castle’s daughter shares a potentially explosive secret with Beckett instead of her father.
When two separate murders are committed on the same night, Castle wagers Ryan and Esposito that he and Beckett will solve theirs first. The frenzied race to catch their respective killers and win the bet leads each investigative duo to a likely suspect, only to find that they both have airtight alibis. But bizarre twists in both cases force the two teams to work together to unravel the mind-bending mystery behind each murder
When a half-naked woman is found covered in caramel sauce and hanging by bondage cuffs in a public park, Castle and Beckett’s investigation takes them into New York’s underground world of sexual domination. Naturally the case serves as sexy fodder for their already charged relationship banter.
When a murdered man is found stuffed in the garbage chute of an apartment building and two women arrive to ID his body — one his wife and the other his fiance — Castle and Beckett have their hands full keeping the women from killing each other as they work to peel back the layers of the victim’s double life. Was it a jilted woman, corporate espionage, or a much darker secret that led to his demise?
When Castle and Beckett are called to a wedding to investigate the death of a bridesmaid, Castle is stunned to discover that the soon-to-be bride is his old flame, Kyra, “the one that got away” (guest starring Alyssa Milano). Complications ensue as Kyra, caught off-guard by Castle’s reappearance in her life, wonders if she’s marrying the right guy. With the nuptials forestalled and the entire wedding party under suspicion, Beckett questions Castle’s ability to be objective about the case. But when it looks to Beckett like Castle and Kyra might rekindle their romance, her judgment may be compromised as well.
When an up-and-coming rock star’s dead body is found staged in a scene straight out of her hit music video, Castle and Beckett delve into the world of obsessed fans, sleazy managers and jealous band members. But it’s only when Alexis uncovers the true meaning behind the lyrics of the final song that clues to the killer’s identity begin to surface.
While investigating the death of an Irish mobster, Beckett and Castle uncover a local turf war that may be connected to both a late-night infomercial guru and an international drug smuggling operation. But the case turns agonizingly personal when evidence emerges that the killer they’re chasing may have had a hand in Beckett’s mother’s murder.