Castle (2009–2016)
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Need to Know 

Esposito and Ryan investigate a former TV star's murder, but Beckett and her partner take over the case and do not want them, or Castle, involved.



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Episode cast overview, first billed only:
Lanie Parish (credit only)
Alexis Castle
Ethan Wright
Svetlana Renkov (as Emily Foxler)


Perhaps partially annoyed by Alexis's ever-present lover-house-guest Pi's health food obsession, Castle is ready to move to DC so he can be with Becket again. For now, he's torn between loyalty to his own curiosity and the NYPD boys, who are breaking in junior detective Grant 'Sully' Sullivan, expecting he gets information from Becket, and her need to preserve mandatory secrecy when the FBI is ordered to take over a New York murder without specifying the 'national security' aspect. Victim Charlie Reynolds, a has been high-school soap star whom Ryan adores openly, had a complex relationship with co-star Ramon Russo, now an acting teacher, who hoped to return to the screen as the series was promised a movie revival. New co-star Svetlana Renkov,d daughter of a Russian mob king, is key to the money behind film and criminal hidden agenda. Written by KGF Vissers

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TV-PG | See all certifications »


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Release Date:

7 October 2013 (USA)  »

Company Credits

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Technical Specs


Sound Mix:


Aspect Ratio:

16:9 HD
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Did You Know?


The TV show and reunion movie that this episode is about are based off of the 1990s TV hit Saved By The Bell. When the CIA agent tosses his badge to Esposito, he calls Esposito Mario Lopez. Mario Lopez was one of the stars of Saved By The Bell. See more »


Most of the six people in the warehouse put their prints on the cases or the contents thereof, compromising evidence. See more »


Richard Castle: We really have to talk about something.
Kate Beckett: Okay.
Richard Castle: We've been doing this... long distance thing for months, and, uh... I mean, we never see each other. And when we do, it's a... it's a day here, it's a weekend there, and... let's face it, it's not... working.
Kate Beckett: I... I know, Castle, but I don't... I don't know how to fix this.
Richard Castle: I do.
[Castle holds up a key]
Kate Beckett: Wh... what is that?
Richard Castle: That's a key. To... our D.C. apartment. I mean, the truth is, I can... I can write from anywhere, so I found a place with a ...
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References Argo (2012) See more »


Castle Theme Song
Written by Robert Duncan
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User Reviews

Ending A Bit of a Surprise!
15 October 2013 | by (Seymour Tennessee) – See all my reviews

It is Boys Vs Girls with the NYPD and the Attorney General's office with the CIA thrown in there. As the NYPD "welcomes" back Castle. As he and Ryan and Eposito investigate a former TV washed up actor's death.

But since Kate and partner Rachel come into the picture to take over the investigation due to national security and not telling them anymore hence the Need to Know title.

NYPD thinks that Kate has "betrayed" them as it gets very competitive as Castle is caught in the middle. As the so-called swing vote.

But the CIA comes in and boots both of the NYPD and Attorney General's Office off the case. As Kate does something that you would have to see as this involves her own job.

Rachel was a love-hate relationship. But still, she admired Kate's toughness and not seeing beyond black and white.

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