Smallville: Season 4, Episode 17

Onyx (13 Apr. 2005)

TV Episode  -   -  Adventure | Drama | Romance
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Ratings: 8.6/10 from 437 users  
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An experiment with heated (black) kryptonite at Luthorcop causes an explosion which badly wounds Dr. Sinclair, the scientist in charge, and creates a molecular copy of Lex which has the ... See full summary »



(character created by: Superman), (character created by: Superman), 6 more credits »
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Title: Onyx (13 Apr 2005)

Onyx (13 Apr 2005) on IMDb 8.6/10

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Episode cast overview:
Jason Teague (credit only)
Dr. Sinclair
Craig Lapthorne ...
Security Guard
Carra Maureen ...
Fencing Instructor


An experiment with heated (black) kryptonite at Luthorcop causes an explosion which badly wounds Dr. Sinclair, the scientist in charge, and creates a molecular copy of Lex which has the evil side of his personality. While the real Lex shows Clark the experiment was to create far stronger crops, the evil one gives Sinclair a fatal injection in hospital after questioning him. Fearing an effect on himself, 'Evil Lex' locks the good Lex up wearing an iron mask and sets out ruining lives in Smallville, such as closing The Talon when Lana refuses to be his girlfriend, and taunting Lionel Luthor badly enough to make him turn away from charity. When Chloe shows Clark proof on hospital video recordings there must by two Lex's, Super-boy is duped into telling the fiend everything, believing him to be the real one, so the Clark family and Chloe become his prime targets, and he knows about green kryptonite and its affect on Clark. Written by KGF Vissers

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Release Date:

13 April 2005 (USA)  »

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Did You Know?


Lex Luthor: I gotta hand it to you guys. I mean, keeping something like this a secret must've required an impressive ability to obscure the truth. Maybe the Kents and the Luthors have something in common after all.
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I Drive Alone
Performed by Esthero
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User Reviews

The Dark Side of Luthor
27 June 2006 | by (Rio de Janeiro, Brazil) – See all my reviews

While performing an experiment with heated kryptonite at the Luthorcop's facility, the laboratory blows and the dark side of Lex Luthor is separated from him. The mean Lex controls and imprisons the good one in a room, wearing an iron mask like in Alexandre Dumas's novel, and spread evil among Lana Lang, Clark Kent, Chloe Sullivan and Lionel Luthor.

In this episode, the evilness sleeping within Lex Luthor is disclosed, showing how wicked he can be, destroying people, relationships and awaking the worst of Lionel Luthor. Now it seems that the old Lionel is back: his last sentence, "We are the Luthors", is something scary. My vote is nine.

Title (Brazil): "O Vilão" ("The Villain")

11 of 15 people found this review helpful.  Was this review helpful to you?

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