Star Trek: The Next Generation Episode Guide

Season 4

The Best of Both Worlds, Part II

S4 E1 ● 1990-Sep-24
When the deflector weapon proves to be ineffective, the Borg ship warps toward Earth. A Starfleet armada of 40 ships attacks the Borg ship at Wolf 359 and is defeated. The Enterprise rescues Pi...


S4 E2 ● 1990-Sep-29
While the Enterprise undergoes repairs at McKinley Station in orbit around Earth, Picard returns home to visit his brother Robert in France. Worf's adoptive parents, Helena and Sergei Rozhenko,...


S4 E3 ● 1990-Oct-08
Data (and inadvertently Lore) is called back by his creator, Dr. Soong, by a homing device in his circuits that causes him to take control of the Enterprise, while a young passenger is dangerou...

Suddenly Human

S4 E4 ● 1990-Oct-15
The Enterprise saves a Talarian ship and a teenage human boy named Jono who was been raised by the aliens as one of their own. DNA matching identifies him as Jeremiah Rossa, grandson of Starfle...

Remember Me

S4 E5 ● 1990-Oct-22
Dr. Crusher discovers crew members are vanishing one by one, but no one left on board misses them — or even knows who they are. She eventually discovers that she is trapped in a warp bubble generated...


S4 E6 ● 1990-Oct-29
A rescue attempt of a Federation freighter on Turkana IV, Tasha Yar's home planet, leads to her sister, Ishara Yar. Yar wins the confidence of the crew and offers to help rescue the men, but is actual...


S4 E7 ● 1990-Nov-05
During an investigation of a radiation anomaly, the Enterprise is met by a Klingon warship bearing Ambassador K'Ehleyr. When she beams aboard to meet with Captain Picard, she brings a surprise ...

Future Imperfect

S4 E8 ● 1990-Nov-12
Riker awakens in sick bay to be told that 16 years have elapsed and he now has a son. Dr. Crusher tells him his memory of those years has been erased by a virus he contracted during an away mission on...

Final Mission

S4 E9 ● 1990-Nov-19
Wesley joins Captain Picard on a final mission after learning he will finally be going to Starfleet Academy. En route to mediate a miners' dispute, the shuttlecraft crashes on a desert moon. Meanwhile...

The Loss

S4 E10 ● 1990-Dec-31
Troi loses her empathic abilities while the Enterprise is trapped in a two-dimensional field and being drawn with it toward a cosmic string that will destroy the Enterprise.

Data's Day

S4 E11 ● 1991-Jan-07
Data narrates a day's activities in which he tries to understand various human reactions. Chief Miles O'Brien marries Keiko. Dr. Crusher teaches Data to dance. Meanwhile, Vulcan Ambassador T'Pel takes...

The Wounded

S4 E12 ● 1991-Jan-27
Renegade Starfleet Captain Maxwell of the U.S.S. Phoenix is attacking the Cardassians, and the Enterprise must intercept and stop him before he starts a war.

Devil's Due

S4 E13 ● 1991-Feb-04
An emergency transmission from a Federation science station brings the Enterprise to Ventax II. A woman with great powers claims to be the Ventaxian's mythical figure Ardra and she has returned...


S4 E14 ● 1991-Feb-11
After experiencing a wormhole, Data appears to be lying to cover up the reason for the crew's resulting unconsciousness.

First Contact

S4 E15 ● 1991-Feb-18
Riker is injured and hospitalized while disguised as one of the people of the planet Malcoria III, a society on the verge of space travel. To find Riker, Picard makes immediate contact with the Malcor...

Galaxy's Child

S4 E16 ● 1991-Mar-11
Geordi meets the real Dr. Brahms he once "met" as a Holodeck image, who is onboard to study his engine modifications. A newborn lifeform attaches itself to the Enterprise and is draining its en...

Night Terrors

S4 E17 ● 1991-Mar-18
When the Enterprise responds to a distress call from the U.S.S. Brattain, they find the Brattain crew dead, except for a catatonic Betazoid science advisor. The Enterprise ...

Identity Crisis

S4 E18 ● 1991-Mar-25
Geordi and his former commander from the U.S.S. Victory NCC-9754, Suzanna Leijten, are undergoing changes into an alien form due to a mission five years ago on the planet Tarchannen III, to whi...

The Nth Degree

S4 E19 ● 1991-Apr-22
Sent to repair the malfunctioning Argus Array telescope, the Enterprise discovers an alien probe. An energy surge from the probe turns Lt. Barclay into a superbeing and enables him to form a ne...


S4 E20 ● 1991-Apr-01
Vash comes to the Enterprise for an archaeology conference, but is annoyed Picard has never mentioned her to the crew. Q decides to help, and transforms the Captain and crew into Robin Hood and...

The Drumhead

S4 E21 ● 1991-Apr-29
After a Klingon exchange scientist admits to spying, retired Admiral Satie accuses an innocent crewman, Simon Tarses — and then Picard — of treason against the United Federation of Planets.

Half a Life

S4 E22 ● 1991-Apr-29
Lwaxana Troi falls in love with Timicin, an alien scientist on board the Enterprise for a scientific test to aid in saving his planet, Kaelon II. After an unsuccessful test, he confides to Lwax...

The Host

S4 E23 ● 1991-May-13
Beverly Crusher becomes romantically involved with Trill ambassador Odan, who is being escorted by the U.S.S. Enterprise to mediate a dispute in the Peliar system. When he is fatally wounded, s...

The Mind's Eye

S4 E24 ● 1991-May-27
En route to vacation and a seminar on Risa, Geordi La Forge is captured by the Romulans, who program him though his VISOR to help in an assassination plot against the Klingons. Meanwhile, the Enter...

In Theory

S4 E25 ● 1991-Jun-03
While Picard navigates the Enterprise through an unstable region of space, Data attempts a romantic relationship with a human crewmate, Lt. Jenna D'Sora.

Redemption, Part I

S4 E26 ● 1991-Jun-17
The Enterprise travels to the Klingon home world to install Gowron as leader of the Klingon High Council. When the sisters of Duras, Lursa and B'Etor, challenge his leadership, Worf resigns his...