Castle: Season 5, Episode 6

The Final Frontier (5 Nov. 2012)

TV Episode  |  TV-PG  |   |  Comedy, Crime, Drama
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Ratings: 8.9/10 from 1,037 users  
Reviews: 3 user | 1 critic

During the annual major SciFfi convention, Nebula 9 - super-fan Audrey O'Neill, who finally organized with a nerd couple a life performance there starring the short-lived series' original ... See full summary »



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Episode cast overview, first billed only:
Martha Rodgers (credit only)
Lanie Parish (credit only)
Alexis Castle (as Molly Quinn)
Captain Victoria Gates (credit only)
Gabriel Winters
Stephanie Frye
Benjamin Donnelly
Audrey O'Neill
Davis Hawthorne
Simon Westport (as Chris L. McKenna)


During the annual major SciFfi convention, Nebula 9 - super-fan Audrey O'Neill, who finally organized with a nerd couple a life performance there starring the short-lived series' original cast as well after decade of 'webipsodes', is found dead on set, killed with a real 'space laser', of which only two working ones were custom-made. Castle, who has better taste, is amused to find Becket was part of a college fan gang. The team works out various personal, career and business motives as well as opportunities for cast and crew. Written by KGF Vissers

Plot Summary | Add Synopsis


Comedy | Crime | Drama | Mystery


TV-PG | See all certifications »




Release Date:

5 November 2012 (USA)  »

Company Credits

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Technical Specs

Sound Mix:


Aspect Ratio:

16:9 HD
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Did You Know?


The fictional show in this episode is called "Nebula 9". The series "Firefly" that Nathan Fillion starred, had 9 main characters: Mal, Jane, Zoey, Wash, Inara, Book, Simon, Kaylee & River. See more »


Richard Castle: Perlmutter! Good to see you.
M.E. Sidney Perlmutter: Ah! If only the feeling were mutual.
See more »


References 2001: A Space Odyssey (1968) See more »


Tesla Girls
Performed by Orchestral Manoeuvres In The Dark
See more »

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User Reviews

Castle References to Firefly
15 April 2014 | by See all my reviews

Did you know? When Caste is first belittling the "Nebula 9" series to Beckett, he contrasts it to good sci-fi shows, "Star Trek, Battlestar, that Joss Whedon show. . .". Joss Whedon was the screenwritter and creator of the 2002-03 TV sci-fi series, Firefly, in which Nathan Fillion also starred. This one of at least 3 references, probably more, which Castle makes in various episodes to the Firefly series. Another is when he dresses up as a space cowboy for Halloween, and Molly Quinn tells him the costume is so 6 years ago. The third reference I know of is when he unexpectedly speaks Chinese. When Beckett asks how he learned Chinese, Castle explains it was from some TV show he used to like.

4 of 5 people found this review helpful.  Was this review helpful to you?

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