Star Trek: The Next Generation: Season 4

1990
26 episodes
45m

As Riker tries to save the Enterprise and the Earth from a powerful alien race, Captain Picard's life hangs in the balance. The crew faces their own demons and must overcome their own obstacles to continue their mission. This leads Data to return to his creator to better understand emotions. Worf must accept his Klingon heritage and face his former family. A power struggle threatens the Federation as the Romulans try to make peace with their universe and the Klingons deal with a potential successor to their empire. Political relations are strained within the Enterprise as a rogue ship attacks former enemies of the Federation, ultimately leading up to a civil war where one member of the Enterprise must decide where his loyalty lies.

Season 4 of Star Trek: The Next Generation premiered on September 24, 1990 and has 26 episodes, from "The Best of Both Worlds (2)" to "Redemption (1)". The last episode aired on June 17, 1991.

Where to watch Star Trek: The Next Generation

In the United States, you can stream Star Trek: The Next Generation on Paramount Plus. It is also free on Pluto TV. You can also buy it on Amazon Video, Apple TV Store, Google Play Movies and Fandango At Home. It is on streaming services in 13 countries.

Where to watch

Episodes

Episode 1The Best of Both Worlds (2)Aired September 24, 1990
Stardate: 44001.4. Riker must pull out all the stops in order to save Earth from a Borg invasion being lead by none other than Locutus - otherwise known as Captain Jean-Luc Picard.
- 46m
- Directed by Cliff Bole
- Written by Michael Piller
Guest stars
- Whoopi Goldberg Guinan
- Wil Wheaton Wesley Crusher
- Elizabeth Dennehy Lt. Cmdr. Shelby
- Colm Meaney Miles O'Brien
- George Murdock Admiral J. P. Hanson
- Todd Merrill Gleason
Episode 2FamilyAired October 1, 1990
Stardate 44012.3. Picard meets with his older brother in France, and contemplates resigning his Starfleet commission after his ordeal with the Borg. Worf's adoptive parents spend time with their son on the Enterprise, and succeed in embarrassing him in front of his crewmates.
- 46m
- Directed by Les Landau
- Written by Ronald D. Moore
Guest stars
- Whoopi Goldberg Guinan
- Wil Wheaton Wesley Crusher
- Colm Meaney Miles O'Brien
- Jeremy Kemp Robert Picard
- Samantha Eggar Marie Picard
- David Birkin René Picard
- Theodore Bikel Sergey Rozhenko
- Dennis Creaghan Louis
Episode 3BrothersAired October 8, 1990
Stardate: 44085.7 While escorting a seriously ill boy to the closest Federation Starbase for treatment, Data mysteriously takes control of the Enterprise and takes it to a distant planet. He learns that his creator has summoned him for an important meeting that could change his life. However, Dr. Soong unknowingly summoned Data's twin brother Lore, into the bargain.
- 46m
- Directed by Rob Bowman
- Written by Rick Berman
Guest stars
- Colm Meaney Miles O'Brien
- Cory Danziger Jake Potts
- Adam Ryen Willie Potts
- James Lashly Ensign Kopf
Episode 4Suddenly HumanAired October 15, 1990
Stardate: 44143.7. A custody battle between Picard and a child's adoptive father arises when a boy showing evidence of abuse is discovered.
- 46m
- Directed by Gabrielle Beaumont
- Written by Ralph Phillips, Jeri Taylor and John Whelpley
Guest stars
- Wil Wheaton Wesley Crusher
- Sherman Howard Captain Endar
- Chad Allen Jono
- Barbara Townsend Admiral Connaught Rossa
Episode 5Remember MeAired October 22, 1990
Stardate: 44161.2. Dr. Crusher begins to question her sanity when members of the crew start disappearing one by one, and all evidence of their existence is erased.
- 46m
- Directed by Cliff Bole
- Written by Lee Sheldon
Guest stars
- Wil Wheaton Wesley Crusher
- Colm Meaney Miles O'Brien
- Eric Menyuk Traveler
- Bill Erwin Doctor Dalen Quaice
Episode 6LegacyAired October 29, 1990
Stardate: 44215.2. The Enterprise is caught in the middle of a civil war when they encounter Tasha Yar's long-lost younger sister, Ishara.
- 46m
- Directed by Robert Scheerer
- Written by Joe Menosky
Guest stars
- Colm Meaney Miles O'Brien
- Beth Toussaint Ishara Yar
- Christopher Michael Coalition Man
- Don Mirault Hayne
- Michael Braveheart Crewman Martinez (uncredited)
- Vladimir Velasco Tan Tsu
- Cullen G. Chambers Arcos pilot
- BJ Davis Alliance Member
Episode 7ReunionAired November 5, 1990
Stardate: 44246.3. Picard is asked to choose between two candidates to succeed the current Chancellor of the Klingon High Council as the new ruler of the Empire. Worf is disturbed by unexpected news when he is paid a visit by his former lover.
- 46m
- Directed by Jonathan Frakes
- Written by Ronald D. Moore, Brannon Braga, Thomas Perry and Drew Deighan
Guest stars
- Robert O'Reilly Gowron
- April Grace Transporter Technician Hubbell
- Charles Cooper K'mpec
- Michael Rider Transporter Chief
- Patrick Massett Duras
- Suzie Plakson K'Ehleyr
- Basil Wallace Klingon Guard #1
- Jon Paul Steuer Alexander Rozhenko
Episode 8Future ImperfectAired November 12, 1990
Stardate: 44286.5. Riker awakens one morning to discover he is suddenly 16 years in the future as the captain of the Enterprise, and negotiating a peace treaty with the Romulans with no recollection of how he arrived at that point in time, or of any recent events.
- 46m
- Directed by Les Landau
- Written by David Bennett Carren and J. Larry Carroll
Guest stars
- Carolyn McCormick Minuet
- April Grace Transporter Technician Hubbell
- Andreas Katsulas Commander Tomalak
- Chris Demetral Jean-Luc Riker / Ethan
- Todd Merrill Gleason
- George O'Hanlon, Jr. Transporter Chief
- Patti Yasutake Nurse Alyssa Ogawa
Episode 9Final MissionAired November 19, 1990
Stardate: 44307.3. Wesley must keep Captain Picard alive on the eve of his entrance exam to Starfleet Academy when their shuttle crashes on a barren moon.
- 46m
- Directed by Corey Allen
- Written by Jeri Taylor and Kacey Arnold-Ince
Guest stars
- Wil Wheaton Wesley Crusher
- Nick Tate Dirgo
- Kim Hamilton Songi
- Mary Kohnert Ensign Tess Allenby
- Tracee Cocco Jae (uncredited)
Episode 10The LossAired December 31, 1990
Stardate: 44356.9. Troi loses her empathic abilities when the Enterprise is caught in the gravitational pull of a black hole.
- 46m
- Directed by Chip Chalmers
- Written by Hilary Bader
Guest stars
- Whoopi Goldberg Guinan
- Kim Braden Ensign Janet Brooks
- Mary Kohnert Ensign Tess Allenby
- Cameron Oppenheimer Ensign Kellogg
- Tracee Cocco Jae (uncredited)
Episode 11Data's DayAired January 7, 1991
Stardate: 44356.9. A Vulcan Ambassador being escorted by the Enterprise starts exhibiting suspicious behavior. Miles O'Brien marries his fiancée, Keiko Ishikawa in Ten-Forward.
- 46m
- Directed by Robert Wiemer
- Written by Ronald D. Moore and Harold Apter
Guest stars
- Colm Meaney Miles O'Brien
- Rosalind Chao Keiko Ishikawa
- April Grace Transporter Technician Hubbell
- Alan Scarfe Admiral Mendak
- Sierra Pecheur Ambassador T'Pel
- Shelly Desai V'Sal
- Cameron Oppenheimer Ensign Kellogg
- Tracee Cocco Jae (uncredited)
Episode 12The WoundedAired January 28, 1991
Stardate: 44429.6. When the Cardassians start re-arming themselves, a Federation Captain takes it upon himself to remove a potential threat before it escalated. Now, Picard must fight for the Cardassians and stop the renegade from slaughtering innocents.
- 46m
- Directed by Chip Chalmers
- Written by Stuart Charno, Jeri Taylor, Cy Chermak and Sara B. Cooper
Guest stars
- Rosalind Chao Keiko O'Brien
- Bob Gunton Capt. Benjamin Maxwell
- Colm Meaney Miles O'Brien
- Time Winters Glin Daro
- John Hancock Admiral Haden
- Marc Alaimo Gul Macet
- Tracee Cocco Jae (uncredited)
Episode 13Devil's DueAired February 4, 1991
Stardate: 44474.5. The crew of the Enterprise must defend the planet Ventax from a mythological Devil who re-appears when a 1000 year long era of peace comes to an end.
- 46m
- Directed by Tom Benko
- Written by Philip LaZebnik and William Douglas Lansford
Guest stars
- Marta DuBois Ardra
- Paul Lambert Dr. Howard Clarke
- Marcelo Tubert Acost Jared
- Thad Lamey Devil Monster
- Tom Magee Klingon Monster
- Cameron Oppenheimer Ensign Kellogg
Episode 14CluesAired February 11, 1991
Stardate: 44502.7. Picard orders a secret investigation when the crew suspects Data of lying about the discovery of a wormhole.
- 46m
- Directed by Les Landau
- Written by Joe Menosky and Bruce D. Arthurs
Guest stars
- Whoopi Goldberg Guinan
- Colm Meaney Miles O'Brien
- Pamela Winslow Ensign McKnight
- Tom Knickerbocker Gunman
- Cameron Oppenheimer Ensign Kellogg
- Patti Yasutake Nurse Alyssa Ogawa
- Joyce Agu Ensign Gates (uncredited)
Episode 15First ContactAired February 18, 1991
Riker is abducted by a xenophobic race of aliens during a first contact mission. They believe the Enterprise is a scout for an invasion.
- 46m
- Directed by Cliff Bole
- Written by Joe Menosky, Ronald D. Moore, David Bischoff and Marc Scott Zicree
Guest stars
- Bebe Neuwirth Lanel
- George Coe Chancellor Durken
- Michael Ensign Minister Krola
- Steven Anderson Dr. Nilrem
- George Hearn Dr. Berel
- Sachi Parker Dr. Tava
- Carolyn Seymour Mirasta Yale
Episode 16Galaxy's ChildAired March 11, 1991
Stardate: 44614.6. Geordi must work with the real Leah Brahms when she arrives on the Enterprise when a space-borne alien life form thinks the ship is its mother. Tensions rise when she learns that Geordi created a holographic version of her several months before in order to save the ship from danger.
- 46m
- Directed by Winrich Kolbe
- Written by Joe Menosky, Maurice Hurley and Tom Kartozian
Guest stars
- Whoopi Goldberg Guinan
- Susan Gibney Dr. Leah Brahms
- April Grace Transporter Technician Hubbell
- Lanei Chapman Sariel Rager
- Jana Marie Hupp Ensign Pavlik
- Joyce Agu Ensign Gates (uncredited)
Episode 17Night TerrorsAired March 18, 1991
Stardate: 44631.2. Troi faces a recurring nightmare when the Enterprise is caught in a rift in space. Soon, the crew begins to slip into insanity through dream deprivation.
- 46m
- Directed by Les Landau
- Written by Pamela Douglas, Jeri Taylor and Shari Goodhartz
Guest stars
- Rosalind Chao Keiko O'Brien
- Whoopi Goldberg Guinan
- Colm Meaney Miles O'Brien
- Brian Tochi Ensign Kenny Lin
- Lanei Chapman Sariel Rager
- John Vickery Andrus Hagan
- Shaun Duke Gillespie (Chief)
- Deborah Taylor Zaheva
Episode 18Identity CrisisAired March 25, 1991
Stardate: 44664.5. Geordi and a former crew mate begin evolving into bizarre creatures when they return to a planet both of them were on during an Away Mission five years earlier.
- 46m
- Directed by Winrich Kolbe
- Written by Brannon Braga and Timothy De Haas
Guest stars
- Amick Byram Hickman
- Mona Grudt Ensign Graham
- Maryann Plunkett Lt. Cmdr. Susanna Leijten
- Dennis Madalone Transporter Technician
- Patti Yasutake Nurse Alyssa Ogawa
- Joyce Agu Ensign Gates (uncredited)
Episode 19The Nth DegreeAired April 1, 1991
Stardate: 44704.2. An alien probe transforms Barclay from a shy, awkward character into an arrogant super-genius who is able to interface with the Enterprise's computer through the holodeck.
- 46m
- Directed by Robert Legato
- Written by Joe Menosky
Guest stars
- Kay E. Kuter Cytherian
- Dwight Schultz Lt. Barclay
- David Coburn Ensign Brower
- Jim Norton Holodeck Albert Einstein
- Page Leong Ensign April Anaya
- Saxon Trainor Lt. Linda Larson
- Cameron Oppenheimer Ensign Kellogg
- Joyce Agu Ensign Gates (uncredited)
Episode 20QpidAired April 22, 1991
Stardate:44741.9. Q places Vash and the senior Enterprise crew in a recreation of Robin Hood and his merry men.
- 46m
- Directed by Cliff Bole
- Written by Ira Steven Behr and Randee Russell
Guest stars
- John de Lancie Q
- Jennifer Hetrick Vash
- Clive Revill Sir Guy of Gisbourne
- Joi Staton Servant
Episode 21The DrumheadAired April 29, 1991
Stardate: 44769.2. Picard is accused of treason when an explosion aboard the Enterprise is investigated by a ruthless and paranoid Starfleet Admiral.
- 46m
- Directed by Jonathan Frakes
- Written by Jeri Taylor
Guest stars
- Bruce French Sabin Genestra
- Earl Billings Admiral Thomas Henry
- Henry Woronicz J'Ddan
- Jean Simmons Admiral Nora Satie
- Spencer Garrett Simon Tarses
- Ann Shea Nellen Tore
Episode 22Half a LifeAired May 6, 1991
Stardate: 44805.3. Lwaxana Troi falls in love with a man who must return home to commit suicide, as is customary for their race when they reach a certain age.
- 46m
- Directed by Les Landau
- Written by Peter Allan Fields
Guest stars
- Majel Barrett Lwaxana Troi
- David Ogden Stiers Timicin
- Michelle Forbes Dara
- Colm Meaney Miles O'Brien
- Terrence E. McNally B'Tardat
- Carel Struycken Mr. Homn
- Tracee Cocco Jae (uncredited)
Episode 23The HostAired May 13, 1991
Startdate: 44821.3. Dr. Crusher falls in love with a Trill Ambassador, until she discovers the Trill's symbiotic relationship.
- 46m
- Directed by Marvin V. Rush
- Written by Michel Horvat
Guest stars
- Robert Harper Lathal Bine
- Franc Luz Odan
- Barbara Tarbuck Governor Leka Trion
- Buddy Daniels Friedman Bolian Barber
- William Newman Kalin Trose
- Patti Yasutake Nurse Alyssa Ogawa
- Nicole Orth-Pallavicini Kareel Odan
- Denise Lynne Roberts Patti (uncredited)
Episode 24The Mind's EyeAired May 27, 1991
Stardate: 44885.5. While en route to Risa for shore leave, Geordi is abducted by the Romulans and brainwashed into becoming an assassin.
- 46m
- Directed by David Livingston
- Written by René Echevarria and Ken Schafer
Guest stars
- Lawrence Dobkin Ambassador Kell
- Colm Meaney Miles O'Brien
- Edward Wiley Governor Vagh
- John Fleck Taibak
- Denise Lynne Roberts Patti (uncredited)
- Tracee Cocco Jae (uncredited)
Episode 25In TheoryAired June 3, 1991
Stardate: 44932.3. Data experiences the complexities of love when a fellow crewmate becomes attracted to him.
- 46m
- Directed by Patrick Stewart
- Written by Joe Menosky and Ronald D. Moore
Guest stars
- Rosalind Chao Keiko O'Brien
- Whoopi Goldberg Guinan
- Colm Meaney Miles O'Brien
- Pamela Winslow Ensign McKnight
- Michele Scarabelli Lt. Jenna D'Sora
- Joyce Agu Ensign Gates (uncredited)
Episode 26Redemption (1)Aired June 17, 1991
Stardate: 44995.3. Worf must choose between his people and the Federation when a civil war threatens to destroy the Klingon Empire.
- 46m
- Directed by Cliff Bole
- Written by Ronald D. Moore
Guest stars
- Whoopi Goldberg Guinan
- Jordan Lund Kluge
- Robert O'Reilly Gowron
- Colm Meaney Miles O'Brien
- Barbara March Lursa
- Gwynyth Walsh B'Etor
- Clifton Jones Klingon Helmsman
- Timothy Carhart Lt. Commander Christopher Hobson