Star Trek
The Immunity Syndrome
Season 2, Episode 18 · Aired 1968-01-19
Synopsis
Spock senses the crew of Intrepid, a starship crewed solely by Vulcans, die. Enterprise investigates, and discovers a zone of darkness which conceals the hazard: an immense yet single-celled organism which drains energy from anything it encounters, as it did the Intrepid and her crew. And unless they can discover how to destroy it, Enterprise will be next. Worse, there are signs the organism has accumulated sufficient energy to reproduce...
In the series
This episode is part of Star Trek (1966–1969) on NBC.
A cancelled space opera that refused to die — fandom's founding text.
Key cast
- William Shatner as Capt. James T. Kirk
- Leonard Nimoy as Spock
- DeForest Kelley as Dr. Leonard McCoy
- Nichelle Nichols as Uhura
- James Doohan as Scotty