Star Trek: The Next Generation: Season 4, Episode 18

Identity Crisis (23 Mar. 1991)

TV Episode  -   -  Action | Adventure | Sci-Fi
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Ratings: 6.7/10 from 636 users  
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Lt. Commander Geordi La Forge and an old friend fight to defeat a parasite that is trying to transform them into another species.



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Title: Identity Crisis (23 Mar 1991)

Identity Crisis (23 Mar 1991) on IMDb 6.7/10

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Episode cast overview:
Counselor Deanna Troi (credit only)
Maryann Plunkett ...
Lt. Cmdr. Susanna Leijten
Dennis Madalone ...
Mona Grudt ...
Ensign Graham


Lieutenant Commander Geordi La Forge realizes that he, his friend Lt. Commander Susanna Leitjen and Lieutenant Hickman who deserted in a shuttle-craft and is now on a suicidal course to a planet were all in a mission made years ago by the USS Victory, the others are missing but more vessels are detected on the same planet. After investigations of the base on the planet it turns out they were affected by a yet unknown, parasitic alien race, which is already in both Gordi and Susanna, how is beyond Dr. Crusher's diagnosis, and starts transforming from a cellular level first her into a blue critter, later him too, while he continues researching Starfleet records and hologram simulation, while closely monitored... Written by KGF Vissers

Plot Summary | Add Synopsis




Release Date:

23 March 1991 (USA)  »

Company Credits

Production Co:

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Technical Specs

Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


Brian Phelps, Mark Thompson:  stars of The Adventures of Mark & Brian (1991) appear as two of the aliens. Behind the scenes footage of this was featured on their show. See more »


Data informs Riker that his modifications on the emergency beacon will take approximately another two minutes. Yet he completes them after only 40 seconds - for Data a rather huge miscalculation. See more »


[last lines]
Lt. Commander Geordi La Forge: You know... down there, I... I didn't know who you were. And yet... somehow... I believed you. I trusted you.
Lt. Cmdr. Susanna Leijten: That must have been because of all the good advice I used to give you.
Lt. Commander Geordi La Forge: Thanks.
See more »


Star Trek: The Next Generation End Credits
Composed by Jerry Goldsmith and Alexander Courage
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User Reviews

Changing one's looks.
23 April 2006 | by (United States) – See all my reviews

ST:TNG:92 - "Identity Crisis" (Stardate: 44664.5) - this is the 18th episode of the 4th season of Star Trek: The Next Generation.

While serving on the Victory 5 years before, Geordi was part of an Away Team sent to investigate the disappearance of Tarchannen III colonists, along with his friend Susanna. Now, the Away Team members start vanishing one by one until only Geordi and Susanna are left. Soon, Susanna's blood chemistry starts changing, changing her into another life form. . . and soon it starts happening to Geordi.

This is a great episode, especially in term of makeup effects/costume suits.

Trivia note: you see a recording of Geordi LaForge when he was the crew of the Victory 5 years before wearing the 1st season red uniform (even a visual representation on Holodeck 3 - Geordi's favorite Holodeck). And Data becomes "strongly motivated" (aka worried) to help Geordi before his "Identity Crisis". And, Nurse Ogawa makes another appearance.

11 of 13 people found this review helpful.  Was this review helpful to you?

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