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Castle

Watch Castle Season 6 full episodes online, free and paid options via our partners and affiliates.

A Face From Her Past
Watch Castle Season 6 Episode 23
"For Better or Worse"
Original Air Date:

As Rick and Kate's wedding day draws near, a shocking event sends them on a wild run that threatens to ruin their day on the season finale of Castle.

A Secret Investigation
Watch Castle Season 6 Episode 22
"Veritas"
Original Air Date:

When man whom Beckett was secretly watching in connection to her mother's murder is killed, she and Castle become the target of a manhunt that puts their lives at risk.

Extreme Sports
Watch Castle Season 6 Episode 21
"Law & Boarder"
Original Air Date:

Castle and Beckett dive into the world of death defying stunts when a mysterious motorcyclist guns down and up-and-coming skateboarder on Castle.

Stepping Back
Watch Castle Season 6 Episode 20
"That '70s Show"
Original Air Date:

When the body of an infamous mobster who disappeared in the 1970s is found, Castle and Beckett find one remaining witness. But since he still believes it's the '70s, they must act like his delusion is real in order to find their killer.

Murder and Family
Watch Castle Season 6 Episode 19
"The Greater Good"
Original Air Date:

When a Wall Street Trader is murdered the investigation is complicated when they find out the victim was a confidential informant for a US Attorney who happens to be Capt. Victoria Gates' estranged sister on Castle.

Castle and the Ninja
Watch Castle Season 6 Episode 18
"The Way of the Ninja"
Original Air Date:

When Castle and Beckett investigate the murder of a Japanese ballet dancer, they realize that she may have be killed by a ninja, an now they're after Castle.

Things Go Horribly Wrong
Watch Castle Season 6 Episode 17
"In the Belly of the Beast"
Original Air Date:

An undercover Narcotics operation goes wrong for Beckett and she ends up in a battle of wits with some of the most dangerous men of NYC's underworld on Castle.

New Information
Watch Castle Season 6 Episode 16
"Room 147"
Original Air Date:

When a woman confesses to murder, she tells the detectives details only the killer would know, but when someone else confesses with the same knowledge Castle and Beckett realize this case is more mysterious than they originally thought.

The Principal's Office
Watch Castle Season 6 Episode 15
"Smells Like Teen Spirit"
Original Air Date:

The murder of a high school mean girl brings Castle back to one of his many alma maters and face to face with a possible telekinetic killer on Castle.

A Model Murder
Watch Castle Season 6 Episode 14
"Dressed to Kill"
Original Air Date:

The murder of a fashion icon's assistant brings to light unexpected obstacles for Rick and Kate's wedding on Castle.

The Unexpected Truth
Watch Castle Season 6 Episode 13
"Limelight"
Original Air Date:

The investigation into a pop star's murder uncovers her hard partying lifestyle but it's another unexpected revelation shocks everyone on Castle.

Jackson Hunt Returns
Watch Castle Season 6 Episode 12
"Deep Cover"
Original Air Date:

Castle is stunned when the murder of a former hacker leads directly back to his father, Jackson Hunt.

Ryan & Jenny
Watch Castle Season 6 Episode 11
"Under Fire"
Original Air Date:

As serial arsonist's fire traps Ryan and Esposito, Jenny may end up giving birth alone on Castle.

Castle & a Baby
Watch Castle Season 6 Episode 10
"The Good, The Bad, and The Baby"
Original Air Date:

When a dying man stumbles into a church before dying and hands a priest a baby, Castle and Beckett end up as unlikely nannies during their investigation into the man's death on Castle.

Danger At The 12th
Watch Castle Season 6 Episode 9
"Disciple"
Original Air Date:

Castle and Beckett suspect a killer may be targeting members of the 12th precinct when a murder victim bears a shocking resemblance to Dr. Lanie Parish on the latest Castle.

The Relationship Test
Watch Castle Season 6 Episode 8
"A Murder Is Forever"
Original Air Date:

On Castle, the detectives lives are on the line when a murder victim turns out to be a relationship therapist to powerful clients who are willing to kill to keep their secrets.

Enlisting Castle Help
Watch Castle Season 6 Episode 7
"Like Father, Like Daughter"
Original Air Date:

On Castle, Alexis asks her Rick for help when her Innocence Review case involves a man on death row. With only 72 hours to go, can father and daughter work together to prove his innocence...or is he truly guilty?

Alexis New Place
Watch Castle Season 6 Episode 6
"Get a Clue"
Original Air Date:

When a young woman is put into a ritualistic pose after being brutally murder, Castle thinks the symbols find in her apartment are part of a Da Vinci Code type conspiracy. Alexis and Pi move into their own place on Castle.

A Time Traveling Killer
Watch Castle Season 6 Episode 5
"Time Will Tell"
Original Air Date:

A murder suspect claims he's traveled back in time to save humanity. Kate, Rick and the team must determine if he's delusional killer, or telling the truth on Castle.

The Negotiator
Watch Castle Season 6 Episode 4
"Number One Fan"
Original Air Date:

On Castle, a woman accused of murder takes hostages and insists she'll only speak with one person. Rick Castle.

The New Coach
Watch Castle Season 6 Episode 3
"Need to Know"
Original Air Date:

The murder of a former teen star from a '90s high school sitcom takes a strange turn when Beckett and McCord arrive at the 12th to take over the case and find a new detective at Beckett's desk on Castle.

Scrambling to Save Castle
Watch Castle Season 6 Episode 2
"Dreamworld"
Original Air Date:

With Castle's life on the line and a stolen toxin threatening thousands of people, Beckett and McCord scramble to stop a terrorist attack and save Rick's life on Castle.

Stana Katic and Nathan Fillion
Watch Castle Season 6 Episode 1
"Valkyrie"
Original Air Date:

Will she or won't she? We learn Kate's response to Rick's major question on the Castle Season 6 premiere.

Castle Season 6 Quotes

Sometimes the hardest things in life are the things most worth doing.

Castle

You can't give up. That's the deal. We want the happy ending, we can't give up.

Castle
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