Episode 1
Aired Sep 20, 2010
A Deadly Affair
When Beckett and her team burst into an apartment on a murderer's trail, they see Castle standing over a dead woman's body holding a gun; Beckett arrests Castle as he asserts his innocence.
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Episode 2
Aired Sep 27, 2010
He's Dead, She's Dead
Beckett and Castle search for a psychic's killer while debating the existence of extrasensory abilities.
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Episode 3
Aired Oct 4, 2010
Under the Gun
When a coded document attracts Castle's attention, Beckett must steer the case back to the violent felons who populated their victim's world; when Beckett's ex-partner arrives, Castle must watch the relationship become romantic.
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Episode 4
Aired Oct 11, 2010
Punked
A young mathematician is shot with a 200-year-old bullet, inspiring wild theories by Castle about a time-traveling murderer.
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Episode 5
Aired Oct 18, 2010
Anatomy of a Murder
An unknown woman falls out of a casket along with the original deceased when pallbearers lose control of the casket at a funeral; the investigation takes Beckett and Castle into the world of amorous, bed-hopping physicians.
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Episode 6
Aired Oct 25, 2010
3XK
When a beautiful woman is found dead, the evidence indicates a notorious serial killer known as "The Triple Killer."
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Episode 7
Aired Nov 1, 2010
Almost Famous
When Beckett and Castle respond to an "officer down" call, they discover the victim is actually a male stripper dressed as a cop.
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Episode 8
Aired Nov 8, 2010
Murder Most Fowl
While investigating a subway worker's murder in Central Park, Castle and Beckett unexpectedly uncover a boy's abduction.
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Episode 9
Aired Nov 15, 2010
Close Encounters of the Murderous Kind
When a prominent astrophysicist is found dead in her car, Castle is led to theorize her death was the result of an alien abduction.
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Episode 10
Aired Dec 6, 2010
Last Call
When a bar owner's body is found in the East River, the investigation takes Castle and Beckett through the forgotten tunnels and passageways of turn-of-the-century New York; Castle considers buying a bar.
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Episode 11
Aired Jan 3, 2011
Nikki Heat
When Castle's novel "Heat Wave" becomes a movie, actress Natalie Rhodes accepts Beckett's invitation to visit and learn about the character she will play; Natalie observes Castle and Beckett's investigation of the murder of a matchmaker.
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Episode 12
Aired Jan 10, 2011
Poof, You're Dead
The owner of a historic magic shop is found dead in Houdini's water torture tank; a new romance comes to light.
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Episode 13
Aired Jan 24, 2011
Knockdown
The retired lead detective on Beckett's mother's homicide case is gunned down after telling her he has new information; Castle and Beckett's partnership grows stronger.
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Episode 14
Aired Feb 7, 2011
Lucky Stiff
The murder of a lottery winner leaves Castle and Beckett with a wealth of suspects; Martha must decide what to do with her inheritance.
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Episode 15
Aired Feb 14, 2011
The Final Nail
An old friend of Castle's emerges as the prime suspect in his wife's murder.
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Episode 16
Aired Feb 19, 2011
Setup
While investigating an apparent robbery/homicide, Beckett and Castle discover the victim was involved in a mysterious conspiracy; as the stakes rise, a federal agent (Adrian Pasdar) takes over the case.
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Episode 17
Aired Feb 28, 2011
Countdown
Castle and Beckett must set aside their differences with Agent Fallon (Adrian Pasdar) while trying to prevent a city-wide catastrophe.
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Episode 18
Aired Mar 21, 2011
One Life to Lose
When the head writer on a popular soap opera is killed with a fire axe, Castle is able to use his skills as an author to make a discovery about the killer.
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Episode 19
Aired Mar 28, 2011
Law & Murder
A juror suddenly dies during a high-profile trial involving a murdered socialite.
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Episode 20
Aired Apr 4, 2011
Slice of Death
When a reporter is found dead inside a pizza oven, Castle and Beckett try to determine why he was murdered.
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Episode 21
Aired Apr 11, 2011
The Dead Pool
Castle and Beckett investigate the death of a champion swimmer; authors Michael Connelly and Dennis Lehane give Castle advice.
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Episode 22
Aired May 2, 2011
To Love and Die in L.A.
Against orders, Beckett travels to Los Angeles while investigating her ex-partner's murder; Castle questions Beckett's motives.
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Episode 23
Aired May 9, 2011
Pretty Dead
After a contestant in a beauty pageant is found strangled, many suspects turn up, including jealous fellow contestants, the pageant's sponsor (Michael McKean), and the show's host (Sasha Roiz).
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Episode 24
Aired May 16, 2011
Knockout
A professional hit man (Max Martini) with information about the murder of Beckett's mother escapes during a court hearing; Castle and the team uncover a deep conspiracy.
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