Castle is grieved when Becket, once regaining health, tells him to leave her time without calling for months. Yet when she returns to work after therapy, Ryan and Esposit ...

Sex offender ex-con Tyler Faris is found in an alley, cut in half by a sword. Faris' victim claims that a man in a superhero uniform saved her. Even Castle doesn't recogn ...

Gunshots, a fleeing van and a massive blood pool all point to murder, but when Castle and Beckett arrive at the crime scene, they discover that it lacks something - the v ...

Student Jane Herzfeld was fatally shot with the Glock service pistol stolen from Detective Ryan by serial killer 3XK. Her ex-boyfriend, Finn McQueen, has an alibi. Phone ...

Museum director Hayes is murdered at a special exhibition from which the diamonds-covered, $50,000,000 show-stopper 'Fist of capitalism' is missing. Suspects include the ...

National TV ghost-buster Jack Sinclair is killed on camera while investigating the famous New York McClellan house, site of 8 previous 'suspicious' murders. His cameraman ...

Accompanying Martha to the bank, where she pigheadedly refuses his financial help, Castle's speculations over the phone with Becket that surgical mask-equipped customers ...

Atlantic City (New Jersey) hotel-casino co-owner Sam Seigel's corpse is found in an abandoned New York warehouse. Captain Victoria Gates keeps Becket in the office to tes ...

Shortly after killing a kindergarten teacher about to marry, a sniper kills a lawyer on a Manhattan street, without an apparent link. Esposito's sharp-shooter training pr ...

When Castle and Beckett wake up in bed, handcuffed together, in a locked room with no memory of how they got there, they must piece together the mystery of where they are ...

A naked man plunges to his death in a fruit stand. However, investigation determines he wasn't forced out the window. He had actually been poisoned a few hours earlier. H ...

When a woman is found murdered in her car, Beckett and her team's investigation leads them directly to City Hall... specifically to the Mayor, Robert Weldon, who happens ...

Dog trainer Francisco Pilar is murdered after naming Best of Show at a dog show. Castle gets the Labrador he was training temporarily adopted as team mascot, and his nose ...

Castle senses a diary of a P.I from the 40's found in the effects of a murdered modern-day treasure hunter is the key to finding the Blue Butterfly, a blue-diamond neckla ...

The team's reputation is dented when Thomas Gage, a ruthless murderer whose identity proves totally faked, not only acts smug when arrested, but manages, as cryptically p ...

CIA agent Sophia Turner kicks Castle and Beckett of the investigation since they didn't contact her about Blakely. However, she turns up in Castles's apartment with more ...

One by one, successful career women, in party costumes from the same shop, are poisoned and staged murdered in ways, to fit the Grimm fairy tail characters of Red Riding ...

During recording of TV show A Night of Dance, spoiled-rotten rich girl Odette Morton, who made it to the semi-final, is murdered in her easily accessible dressing room. S ...

The FBI commandeers the NYPD detectives for little more than leg work after a bomb explodes during an anti-globalist demonstration. Castle is asked by Captain Gates to he ...

A devilishly handsome detective from Scotland Yard teams up with Castle and Beckett to find the person responsible for the murder of his friend's daughter. Also, Castle a ...

Castle finally gets Beckett, who admits so only in therapy, she may have made him wait too long when he teams up for an investigation with her colorful colleague detectiv ...

Castle and Beckett investigate a man's murder where the victim has human bite marks on his body. While Castle has some wild theories, none of them are as strange as what ...

The murder of a Latino army veteran ex-con, ex-Lobos-street gang member quickly links to a break-in in the late captain's home, to steal only and all his old police files ...