Watch Star Trek: The Next Generation Season 4 Episode 18: Identity Crisis Online

	IMDB Rating: 6.7/10 from 793 votes
	Release: 1991 / Star Trek: The Next Generation / Season 4 / Episode 18
	Genre: Action \| Adventure \| Mystery
	Director: Winrich Kolbe
	Stars: Patrick Stewart, Jonathan Frakes, LeVar Burton
	Synopsis: 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...