Fair rating?Star Trek· Season 2 · Episode 13
Obsession
On an obscure planet, Kirk smells something that reminds him of the past. And then two crewman die, their ghastly pallor betraying the fact that every red blood cell in their bodies has been destroyed, the hemoglobin neatly removed. A long time ago, very far from here, Kirk was a young Lieutenant about the Farragut when that ship encountered the cause: a mysterious, gaseous cloud that feeds on blood. Now, Kirk is obsessed with destroying the monster that killed his then mentor, the Farragut's captain Garrovik. Perhaps to an unhealthy degree. Or, given what Spock discovers, perhaps not.
Streaming on (US) 
See all
#21In Season 2of 26 rated episodes
#56All-timeof 79 rated episodes
−0.6vs season avgSeason 2 averages 7.9
1967First airedDecember 15, 1967
Guest stars
James Doohanas Lt. Cmdr. Montgomery "Scotty" Scott
Nichelle Nicholsas Lt. Nyota Uhura
Walter Koenigas Ensign Pavel Chekov
Majel Barrett Roddenberryas Nurse Christine Chapel
Stephen Brooksas Ensign Garrovick
Jerry Ayresas Ensign RizzoCrew
Ralph SenenskyDirector
Art WallaceWriter
Shows like Star Trek
The closest matches on shared genres, ranked by match strength and popularity.
- 01Action·Adventure·Science-FictionStargate SG·11997–2008·Syfy
Stargate SG-1 is a science fiction series based on the original film Stargate. - 02Action·Adventure·Science-FictionThe Mandalorian2019–2023·Disney+
After the stories of Jango and Boba Fett, another warrior emerges in the Star Wars universe. - 03Action·Adventure·Science-FictionLanterns2026·HBOLanterns follows new recruit John Stewart and Lantern legend Hal Jordan, two intergalactic cops drawn into a dark, Earth-based mystery as they investigate a murder in the American heartland.
- 04Action·Adventure·Science-FictionStar Trek: Strange New Worlds2022–present·Paramount+Star Trek: Strange New Worlds follows Captain Pike, Science Officer Spock and Number One in the decade before Captain Kirk boarded the U.S.S.
- 05Action·Adventure·Science-FictionAhsoka2023–present·Disney+Set after the fall of the Empire, Ahsoka follows the former Jedi knight Ahsoka Tano as she investigates an emerging threat to a vulnerable galaxy.
- 06Action·Adventure·Science-FictionMonarch: Legacy of Monsters2023
After surviving Godzilla's attack on San Francisco, Cate is shaken yet again by a shocking secret.
