The Top 100 episodes in Star Trek franchise history according to metrics

386838 13: Actress Kate Mulgrew (Left) Stars As (Captain Kathryn Janeway) And Actor Tim Russ Stars As (Tactical/Security Officer, Tuvok) In The United Paramount Network's Sci-Fi Television Series "Star Trek: Voyager." Episode: "Unimatrix Zero, Part Two." (Photo By Getty Images)
386838 13: Actress Kate Mulgrew (Left) Stars As (Captain Kathryn Janeway) And Actor Tim Russ Stars As (Tactical/Security Officer, Tuvok) In The United Paramount Network's Sci-Fi Television Series "Star Trek: Voyager." Episode: "Unimatrix Zero, Part Two." (Photo By Getty Images) /
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LAS VEGAS, NV – AUGUST 09: Actor Brent Spiner with Cosplayer Joanie Brosas as Lt. Commander Data from ‘Star Trek The Next Generation’ at the 14th annual official Star Trek convention at the Rio Hotel & Casino on August 9, 2015 in Las Vegas, Nevada. (Photo by Albert L. Ortega/Getty Images)
LAS VEGAS, NV – AUGUST 09: Actor Brent Spiner with Cosplayer Joanie Brosas as Lt. Commander Data from ‘Star Trek The Next Generation’ at the 14th annual official Star Trek convention at the Rio Hotel & Casino on August 9, 2015 in Las Vegas, Nevada. (Photo by Albert L. Ortega/Getty Images) /

Star Trek Episode Rankings – #90-81

90. Unification I (TNG) – 71 points

Season 5, Episode 7

Leonard Nimoy is back in the first part of a two-parter. Captain Picard and Data travel to Romulus to determine whether or not Ambassador Spock has defected to the Romulan Empire.

89. The Void (VOY) – 71.1 points

Season 7, Episode 15

The U.S.S. Voyager is stuck in a no man’s land of sorts of space, where there are no stars to be seen and only stranded ships raiding one another to survive.

88. Behind the Lines (DS9)  – 74 points

Season 6, Episode 4

Kira finds out the Dominion is attempting to take down the Federation minefield but the Female Changeling is already attempting to sway Odo to join the ranks.

87. Sons and Daughters (DS9) – 74.1 points

Season 6, Episode 3

The son of Worf enlists with the Klingons to take on the Dominion, while the daughter of Dukat returns to Deep Space Nine as a ploy for Dukat to get closer to Kira.

86. Elementary, Dear Data (TNG) – 74.2 points)

Season 2, Episode 3

After being confronted by Dr. Katherine Pulaski, Data, and Geordi La Forge enter a Sherlock Holmes holodeck story where Moriarty becomes sentient and becomes an issue for the ship.

85. Past Tense Part II (DS9) – 75 points

Season 3, Episode 12

Part two of a story that sees Benjamin Sisko and his crew getting stuck in the past, only to find out they must ensure the Bell Riots of 2024 go off to preserve the timeline.

84. Past Tense Part I (DS9) – 75.5 points

Season 3, Episode 11

Benjamin Sisko, Jadzia Dax, and Julian Bashir find themselves in 2024 for the first part of a two-parter, right before the Bell Riots of 2024.

83. The Naked Time (TOS) – 76 points

Season 1, Episode 6

A contagious disease causes the crew of the Enterprise to act erratically, including a fencing Sulu.

82. Inter Arma Enim Silent Leges (DS9) – 76.1 points

Season 7, Episode 16

Section 31 tries to use Julian Bashir to help keep the Romulans on their side during the Dominion War as he takes a trip to Romulus for a medical conference.

81. By Inferno’s Light (DS9) – 77 points

Season 5, Episode 15

Dukat betrays Deep Space Nine and casts off his daughter as the Dominion invasion of the Alpha Quadrant begins in earnest.