Alias: Season 4, Episode 6

Nocturne (9 Feb. 2005)

TV Episode  |  TV-14  |   |  Action, Drama, Mystery
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When Sydney gets bitten on the neck by a missing in action CIA agent, she soon finds out that she has been infected by a experiential hallucinogen, causing her to slowly lose touch with ... See full summary »



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Episode cast overview, first billed only:
Andre Sterescu (as Michael Goorjian)
Jason Cahilll
Czech Guard


When Sydney gets bitten on the neck by a missing in action CIA agent, she soon finds out that she has been infected by a experiential hallucinogen, causing her to slowly lose touch with reality. Vaughn and Jack must race against the clock to find an antidote before Sydney puts her life (and others next to her) into danger. Written by Anonymous

Plot Summary | Add Synopsis


TV-14 | See all certifications »





Release Date:

9 February 2005 (USA)  »

Company Credits

Show detailed on  »

Technical Specs

Sound Mix:


Aspect Ratio:

1.78 : 1
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Did You Know?


Ironically as Sydney and Vaughn move to rekindle their relationship onscreen, in real life Jennifer Garner and Michael Vartan had just split up. See more »


When Sydney is breaking into the under sink hidden compartment she uses a key to unlock the lock but we can clearly see that the lock is already open. See more »


Arvin Sloane: Sydney, you listening? Its working isn't it? Bit by bit. I'm wearing down your defenses. I'm gaining your trust.
[Sloane moves from TV and replaces Vaughn]
Arvin Sloane: But we both know that at some point I'll betray you, and the people that you care most deeply about, they'll die.
[Sloan turns back into Vaughn as the delusion ends]
Michael Vaughn: Syd, you ok?
See more »


References 28 Days Later... (2002) See more »


Dope Show
by Marilyn Manson
plays during the club scene
See more »

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User Reviews

"Alias" meets "The X-Files"
1 January 2010 | by See all my reviews

Sydney gets bitten on the neck by a CIA agent who was infected by a mysterious and powerful hallucinogenic drug. Pretty soon Sydney starts developing disturbing symptoms herself, so Jack and Vaughn must locate the antidote before the situation gets out of control. Though not nearly as good as the last episode that examined Sydney's mind so much, "Conscious" from season 3, "Nocturne" is better than all the previous season 4 episodes except the two-hour premiere. The most fascinating parts of it are the hallucinations, which seem to be directly connected to her inner fears: Vaughn kissing another woman, Sloane betraying her again, Jack hating her for reminding him of Irina - and apparently Sydney doesn't like bugs much, either. These scenes are very well-done, and so are Dixon's scenes with Sloane, where Dixon expresses his distrust in the honesty of Sloane's "reformation". Ron Rifkin and Carl Lumbly finally get some juicy material to work with besides barking / listening to orders and congratulations. This episode also has one of the funniest credits I've seen at the end: Ryan Gentry as "Not Vaughn"! Can you imagine someone asking him about his participation in "Alias"? "So who did you play?" - "Not Vaughn" - "Yeah, OK, I know that, but who DID you play?"....and so on. *** out of 4.

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