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You'll want to watch Castle Season 5 online to check out Rick Castle and Kate Beckett's first season as an official romantic couple, even if they do have to hide it from the NYPD.
Beckett reconsiders what she wants out of her job, and out of her relationship, in the Season 5 finale of Castle.
Why are federal agents trying to take over a case? That's the question on Castle this week.
Beckett's life is on the line on this episode of Castle after she steps on a bomb. Uh-oh!
Beckett is assigned to protect a billionaire on this episode of Castle, which prompts her to reflect on her relationship.
When a dead woman is found with claw like slash marks, Rick wants to believe Big Foot is the culprit on Castle.
Rick goes stir crazy when he's stuck at home and thinks he witnesses a murder in another apartment on Castle.
We learn a lot more about Ryan on this episode of Castle, as the detective goes undercover.
Castle and Beckett delve into an especially creeper case this week, as a woman dies... from fear?!?
We finally meet Castle's father on the conclusion of the annual two-parter. This is a major episode!
Dylan Walsh guest stars on this episode of Castle. It's the first of a two-parter.
Castle parodies The Real Housewives franchise this week, as a rising young reality star is killed.
Senator William H. Bracken is back on Castle this week. He is linked to the death of a young woman.
The founder of an adult video franchise is found dead on Castle this week. Kelly Hu guest stars.
A DJ is killed on this episode of Castle, forcing Kate and Rick to delve into the raucous world of New York's music industry.
Castle's ex-wife visits this week, causing a problem when she is forced to shack up with Castle and Beckett.
When a man in a Santa suit and Kris Kringle ID is found dead in the snow, Beckett and Castle must hunt down his killer... all while preparing for their first Christmas together as a couple on Castle.
Castle and Beckett bicker on this episode, only to be sent to retrieve the witness to a murder. From there, the couple goes on the run.
A film documentary crew decide to film Castle and Beckett as they investigate the death of a rock star. C Thomas Howell guest stars on Castle.
Castle and Beckett find themselves investigating a murder at a sci-fi convention which has them dealing with crazy costumed fans and egotistical celebrities on this episode of Castle.
Castle is somehow linked to a murder this week. It involves a ritualistic killing.
Csatle and Beckett plan a romantic weekend away on this episode. But it doesn't go according to that plan.
This episode of Castle brings a repossessed storage unit, treasure seekers and Manhattan socialites together following the murder of a woman.
Beckett returns from her suspension this week, while WHNY's veteran weather girl is found dead and she and Beckett look into the crime.
Beckett and Castle deal with the aftermath of their hookup. Ryan and Espo are still in a fight as they chase down clues to help find Kate's shooter. The path leads the four of them to a powerful man in a powerful position. Find out who is our review.