Star Trek: Enterprise (2001–2005)
10 user 3 critic


Archer, Reed and Sato are transformed into aliens while visiting a planet.


LeVar Burton


Gene Roddenberry (based upon "Star Trek" created by), Rick Berman (created by) | 2 more credits »




Episode cast overview:
Scott Bakula ... Capt. Jonathan Archer
John Billingsley ... Dr. Phlox
Jolene Blalock ... Sub-Cmdr. T'Pol
Dominic Keating ... Lt. Malcolm Reed
Anthony Montgomery ... Ensign Travis Mayweather
Linda Park ... Ensign Hoshi Sato
Connor Trinneer ... Cmdr. Charles 'Trip' Tucker III
Roger Cross ... Tret
Daniel Dae Kim ... Cpl. Chang
Troy Mittleider ... Palmer
Philip Boyd ... Com Officer
Brian J. Williams ... Alien Decon Agent


Archer, T'Pol, Sato and Reed land on a planet to investigate a Xindi landing craft, seemingly abandoned two weeks ago, and are infected with a virus that changes their DNA and urges them to return to their capital city. A ship of exterminators seeks to kill the infected crew to prevent an outbreak. Written by Meribor

Plot Summary | Add Synopsis


TV-PG | See all certifications »

Did You Know?


This episode shares similar plot elements to Star Trek: The Next Generation: Identity Crisis (1991), where Geordi La Forge is transformed into another species in an extremely short time span, as well as Star Trek: The Next Generation: Genesis (1994). See more »


The virus as described by Dr. Phlox would change their DNA, but changing DNA does not result in immediate or complete anatomical change. They would likely have no immediate physical symptoms. If the illness was not treated, they would die in the incomplete transformation process, failing the purpose of the engineered virus. See more »


Lieutenant Malcolm Reed: Have you got anything for my stomach? Chef's food isn't sitting too well.
Dr. Phlox: Till your digestive tract is fully restored, you may want to avoid the mess hall.
Lieutenant Malcolm Reed: What do you suggest I eat?
Dr. Phlox: You're welcome to some of the moth larvae I feed to my Pyrithian bat.
See more »


Where My Heart Will Take Me
Written by Diane Warren
Performed by Russell Watson
Episode: {all episodes}
See more »

User Reviews

The Mysterious Virus
1 February 2008 | by claudio_carvalhoSee all my reviews

While investigating an abandoned Xindi ship on the surface of a planet in the Delphic Expanse, Archer, Reed, Sato and T'Pol are infected with a virus and are transformed in aliens. T'Pol keeps her memory and language, and using the translator, she understands that their mates are seeking the city Urquat. Meanwhile, the Enterprise is under siege of two alien ships with teams of exterminators that want to "neutralize" the infected crew to prevent an outbreak of the virus while Phlox researches the cure using the DNA of T'Pol.

In "Extinction", there is a break in the non-stop action of the other three episodes and Archer, Reed, Sato are transformed in obsessive aliens by a mysterious laboratory virus that changes the DNA of other races to the one that is near extinction without capability of breeding, while the Vulcan T'Pol is only partially transformed. I did not find anything special in this episode. My vote is seven.

Title (Brazil): "Extinção" ("Extinction")

11 of 15 people found this review helpful.  Was this review helpful to you? | Report this
Review this title | See all 10 user reviews »

Frequently Asked Questions

This FAQ is empty. Add the first question.


Official Sites:

Official Site





Release Date:

24 September 2003 (USA) See more »

Company Credits

Show more on IMDbPro »

Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

1.78 : 1
See full technical specs »

Contribute to This Page

Recently Viewed