An entertainer on a cruise ship is killed, and Castle and Beckett investigate while trapped on the ship with the murderer.
While Harry discovers out his paternity test results, Karen begins her deposition into her Thomas Grey's death. Also, Richard and April have a date to keep.
Rachel asks Peter and Jared to save a building from being taken by the government after being hit by an artifact. At Damien’s murder trial the judges secrets come out.
While Callie is taking her board exams, Jim investigates the murder of a woman who was about to offer an endorsement for her new surf clothing line to a local surfing champion. Jim is becoming annoyed over Callie's lack of contact so Jennifer attempts to cheer him up. With Callie in Atlanta and their future together uncertain, Jim has to make a decision about his relationship with Callie.moreless
Jim's investigation into a millionaire's death butts head with the UFO group that inherited the dead man's money – they insist it was an alien abduction. Callie's isn't having much luck finding a job in Palm Glades but her relationship with Jim is heating up.moreless
Deceit, betrayal and secrets are all part of the case of fairytale killer. Castle and Beckett find nothing is as it seems after the bodies of two women, one dressed as Red Riding Hood and one as Snow White, are found murdered.moreless
The investigation of the death of a ladies' man causes problems on Ryan's wedding day.
Addison collapses suffering a side effect of the fertility treatment. Cooper unintentionally disappoints Mason when he's late arriving to watch him in his play. Violet and Pete both agree that their marriage is over. Sheldon visits Amelia and urges her to take it one day at a time. Addison promises Sam that the next treatment will be the last one. Amelia is shocked to see Hailey return soon after leaving rehab. Charlotte brings Mason to the hospital and Cooper introduces him to his patient Toby. Everyone gathers at Addison's house for Thanksgiving, even Amelia, as Addison waits patiently for the outcome of her pregnancy test.moreless
In her progress toward motherhood, Addison makes a decision on a sperm donor. Charlotte's past comes back to haunt her while Amelia's behavior continues towards recklessness. Cooper has to deal with parents who are giving their child drugs to control what they think is ADHD. Trust issues keep Pete from accepting Violet back into his life.moreless
Castle and Beckett are after a murder suspect who's roaming the city in a Superhero costume. They think he's behind the killing of an ex-con, but it's a race to identify and catch him before he kills again.moreless
Castle and Beckett investigate the murder of Miss Illinois, a contestant in a beauty pageant, who was found strangled during the rehearsal for "Baron's All-American Beauty Pageant." As the investigation goes on, they find out that several people had motive to kill the victim.moreless
When a juror dies in the middle of a murder trial, Castle and Beckett discover that the juror wasn't really as perfect as he appeared to be.
When Castle's novel "Heat Wave" is turned into a movie, actress Natalie Rhodes, shows up at Beckett's invitation to better understand the character she's going to play. Meanwhile, the threesome investigate the murder of a high-class matchmaker.moreless