The Worst Episodes of Star Trek

Episode Rankings

1. #1 Worst Episode
   Click to reveal

   REVEAL THE WORST
   

   5.9/10(953 votes)

   #1 - The Magicks of Megas-tu

   S1:E810/27/1973

   Stardate: 1254.4 At the center of the galaxy, the Enterprise discovers a race of powerful aliens.

   Director:Unknown

   Writer:Larry Brody

   Be the first to start the conversation for this episode

   Director:Unknown

   Writer:Larry Brody
2. 

   6.1/10(946 votes)

   #2 - The Infinite Vulcan

   S1:E710/20/1973

   Stardate: 5554.4 A race of plant people, and their master, have a plan to force peace onto the galaxy.

   Director:Unknown

   Writer:Walter Koenig

   Be the first to start the conversation for this episode

   Director:Unknown

   Writer:Walter Koenig
3. 

   6.1/10(833 votes)

   #3 - Bem

   S2:E29/14/1974

   Stardate: 7403.6 The Enterprise crew is joined by a unpredictable alien called Ari bn Bem, an independent observer from the planet Pandro.

   Director:Bill Reed

   Writer:David Gerrold

   Be the first to start the conversation for this episode

   Director:Bill Reed

   Writer:David Gerrold
4. 

   6.2/10(888 votes)

   #4 - Once Upon a Planet

   S1:E911/3/1973

   Stardate: 5591.2 Kirk returns to the "shore leave" planet, but it's not as peaceful as it was when they last saw it.

   Director:Unknown

   Writer:Chuck Menville

   Be the first to start the conversation for this episode

   Director:Unknown

   Writer:Chuck Menville
5. 

   6.2/10(840 votes)

   #5 - The Jihad

   S1:E161/12/1974

   Stardate: 5683.1 Kirk and Spock are recruited for a heist to recover a stolen relic, which if not recovered could spark an galactic jihad.

   Director:Unknown

   Writer:Stephen Kandel

   Be the first to start the conversation for this episode

   Director:Unknown

   Writer:Stephen Kandel
6. 

   6.3/10(893 votes)

   #6 - Mudd's Passion

   S1:E1011/10/1973

   Stardate: 4978.5 Space con artist Harry Mudd returns, selling a fake love potion.

   Director:Unknown

   Writer:Stephen Kandel

   Be the first to start the conversation for this episode

   Director:Unknown

   Writer:Stephen Kandel
TRENDING NOW
The 20 BEST Episodes of Star Trek
READ
7. 

   6.4/10(846 votes)

   #7 - The Ambergris Element

   S1:E1312/1/1973

   Stardate: 5499.9 While exploring the planet Argo, Kirk and Spock are turned into water breathers.

   Director:Unknown

   Writer:Margaret Armen

   Be the first to start the conversation for this episode

   Director:Unknown

   Writer:Margaret Armen
8. 

   6.4/10(838 votes)

   #8 - The Practical Joker

   S2:E39/21/1974

   Stardate: 3183.3 The computer of the Enterprise gains partial sentience and starts playing practical jokes on the crew.

   Director:Bill Reed

   Writer:Chuck Menville

   Be the first to start the conversation for this episode

   Director:Bill Reed

   Writer:Chuck Menville
9. 

   6.4/10(804 votes)

   #9 - How Sharper Than a Serpent's Tooth

   S2:E510/5/1974

   Stardate: 6063.4 The Enterprise runs into a being that once visited Earth and influenced the Mayan culture.

   Director:Bill Reed

   Writers:David Wise, Russell Bates

   Be the first to start the conversation for this episode

   Director:Bill Reed

   Writers:David Wise, Russell Bates
10. 

    6.5/10(1061 votes)

    #10 - The Lorelei Signal

    S1:E49/29/1973

    Stardate: 5483.7 Female crew members must take over the Enterprise when the men are incapacitated by a race of sirens.

    Director:Unknown

    Writer:Margaret Armen

    Be the first to start the conversation for this episode

    Director:Unknown

    Writer:Margaret Armen
11. 

    6.6/10(1281 votes)

    #11 - Beyond the Farthest Star

    S1:E19/8/1973

    Stardate: 5521.3 In orbit around a dead star, the Enterprise comes across a huge starship inhabited by a parasitic life form that threatens the entire ship.

    Director:Unknown

    Writer:Samuel A. Peeples

    Be the first to start the conversation for this episode

    Director:Unknown

    Writer:Samuel A. Peeples
12. 

    6.6/10(832 votes)

    #12 - The Pirates of Orion

    S2:E19/7/1974

    Stardate: 6334.1 With Spock stricken down by a fatal disease, the Enterprise must track down the drug that can cure him before it is too late.

    Director:Bill Reed

    Writer:Howard Weinstein

    Be the first to start the conversation for this episode

    Director:Bill Reed

    Writer:Howard Weinstein
13. 

    6.7/10(1069 votes)

    #13 - One of Our Planets Is Missing

    S1:E39/22/1973

    Stardate: 5371.3 The crew of the Enterprise races to find a way to stop a cloud from destroying inhabited planets.

    Director:Unknown

    Writer:Marc Daniels

    Be the first to start the conversation for this episode

    Director:Unknown

    Writer:Marc Daniels
14. 

    6.7/10(872 votes)

    #14 - The Terratin Incident

    S1:E1111/17/1973

    Stardate: 5577.3 The Enterprise crew begins to shrink after radiation exposure.

    Director:Unknown

    Writer:Paul Schneider

    Be the first to start the conversation for this episode

    Director:Unknown

    Writer:Paul Schneider
15. 

    6.7/10(835 votes)

    #15 - The Eye of the Beholder

    S1:E151/5/1974

    Stardate: 5501.2 Telepathic aliens put Kirk, Spock and McCoy in a zoo.

    Director:Unknown

    Writer:David P. Harmon

    Be the first to start the conversation for this episode

    Director:Unknown

    Writer:David P. Harmon
16. 

    6.8/10(971 votes)

    #16 - The Survivor

    S1:E610/13/1973

    Stardate: 5143.3 The Enterprise finds a long-lost explorer.

    Director:Unknown

    Writer:James Schmerer

    Be the first to start the conversation for this episode

    Director:Unknown

    Writer:James Schmerer
17. 

    6.8/10(816 votes)

    #17 - Albatross

    S2:E49/28/1974

    Stardate: 5275.6 Dr. McCoy is arrested and held responsible for causing a plague that ravaged the planet Dramia II, where he performed a mass-innoculation 19 years earlier.

    Director:Bill Reed

    Writer:Dario Finelli

    Be the first to start the conversation for this episode

    Director:Bill Reed

    Writer:Dario Finelli
18. 

    6.9/10(882 votes)

    #18 - The Time Trap

    S1:E1211/24/1973

    Stardate: 5267.6 The Enterprise crew must work with Klingons to escape from a pocket universe.

    Director:Unknown

    Writer:Joyce Perry

    Be the first to start the conversation for this episode

    Director:Unknown

    Writer:Joyce Perry
19. 

    7.0/10(910 votes)

    #19 - The Slaver Weapon

    S1:E1412/15/1973

    Stardate: 4187.3 Spock, Sulu, and Uhura discover a time capsule from an ancient and technologically advanced race. However, it draws some unwanted attention.

    Director:Unknown

    Writer:Larry Niven

    Be the first to start the conversation for this episode

    Director:Unknown

    Writer:Larry Niven
20. 

    7.1/10(1084 votes)

    #20 - More Tribbles, More Troubles

    S1:E510/6/1973

    Stardate: 5392.4 Cyrano Jones introduces tribbles that cannot reproduce.

    Director:Unknown

    Writer:David Gerrold

    Be the first to start the conversation for this episode

    Director:Unknown

    Writer:David Gerrold
21. 

    7.1/10(825 votes)

    #21 - The Counter-Clock Incident

    S2:E610/12/1974

    Stardate: 6770.3 With Commodore Robert April (the first commander of the Enterprise) on board, Kirk pursues a ship plunging into a supernova, and enters a universe where time runs backwards.

    Director:Bill Reed

    Writer:Fred Bronson

    Be the first to start the conversation for this episode

    Director:Bill Reed

    Writer:Fred Bronson
22. 

    8.1/10(1327 votes)

    #22 - Yesteryear

    S1:E29/15/1973

    Stardate: 5373.4 Spock travels back in time to prevent his death as a young Vulcan.

    Director:Unknown

    Writer:D.C. Fontana

    Be the first to start the conversation for this episode

    Director:Unknown

    Writer:D.C. Fontana