Star Trek: Deep Space Nine Episode Rating Graph

Darvin, a disgraced Klingon spy, travels back in time to alter some events to his likings. The DS9 crew must find what he's trying to change and prevent it without altering the time line. They'll have to blend in with the crew from Star Trek: The Original Series.

Sisko becomes uncomfortable when the Klingons station a task force to help defend against the Dominion. Worf is summoned to find out their true intentions.

To save the Federation in a critical scheme, Sisko comes to realize that he must violate its fundamental principles to do so.

Sisko leads, what he hopes will be, a final all-out assault on Cardassia Prime. Kira and Garak mount a suicidal assault on the Cardassian headquarters occupied by the Dominion, who in turn kill innocent women and children village by village in retaliation for the Resistance's attacks.

With the continuing battalions of Jem'Hadar entering the Alpha Quadrant in preparation for war, Sisko decides to mine the wormhole to prevent further troop movement. This provokes a confrontation between the Dominion and the Federation, forcing Sisko to abandon DS9.

Sisko leads, what he hopes will be, a final all-out assault on Cardassia Prime. Kira and Garak mount a suicidal assault on the Cardassian headquarters occupied by the Dominion, who in turn kill innocent women and children village by village in retaliation for the Resistance's attacks.

Sisko becomes uncomfortable when the Klingons station a task force to help defend against the Dominion. Worf is summoned to find out their true intentions.

The Federation attacks DS9 in hopes of keeping the mine field in the wormhole intact, while the Dominion waits entrance to the Alpha Quadrant from the other side.

Now rejoined with his former mentor, Garak is ordered to interrogate Odo about the secrets of his people, while the joined Romulan/Cardassian attack fleet moves towards the Founders' home world on a mission of destruction.

The station readies for a Dominion attack. Worf and Garak meet some unexpected friends in a Dominion Prison camp.

A Cardassian suffering from Kalla-Nohra, a disease that indicates he served in a labor camp, visits DS9. Kira is determined to convict him as a war criminal.

Odo is suddenly struck by illness. He is barely able to hold shape. Bashir and Odo see no other alternative then going to the Founders. Garak wants to come along.

Melanie, an aspiring writer, wants to know why Jake Sisko stopped writing at 40. Jake tells how his father died in an accident and then suddenly reappeared.

Sisko and Quark and a strange telepathic woman are arrested by Jem'Hadar, soldiers of the Dominion.

Odo is affected by the disease threatening to eliminate his race more than he lets on. Kira has to deal with the Cardassian's dislike of her. Even though General Martok sees Chancellor Gowron's move as part of a political vendetta, he does nothing about it.

A coded message from the Gamma Quadrant leads Garak to believe his mentor, Enabran Tain, is still alive. He and Worf seek him out, only to discover something much worse: a Dominion invasion fleet poised to attack the Alpha Quadrant.

Borrowing a captured Jem'Hadar attack ship, Sisko and crew embark on a mission to destroy the hidden base where all of the ketracel-white is stored for the entire Alpha Quadrant.

Odo has found his home and is introduced. Meanwhile Sisko finds out peace talks between the Dominion and the Federation have already started.

Sisko is forced to take the place of a key historical figure on Earth in 2024 in order to preserve the timeline.

Sisko mounts an attack to re-take DS9, while Rom faces charges as an enemy of the Dominion state.

With the war between Klingons and Federation intensifying, Sisko must make a plan to expose Gowron as a changeling. Odo is still having trouble with becoming a solid.

The Defiant is off to show the Federation's presence to the new Tzenkethi government. While underway the ship malfunctions and Bashir is suspected of sabotage.

Quark and Rom take Nog to Earth and Starfleet Academy, but a malfunction with the ship takes the crew back in time, to Roswell New Mexico in 1947.

Quark is forced to marry a Klingon widow after he takes credit for the accidental death of her husband, the head of a powerful Klingon House.

Capt. Sisko and his away team volunteer to stay with a besieged unit at an isolate outpost.

Sisko travels to Earth when a bombing at a Federation conference is determined to be the work of Changelings.

After the Breen attack Earth there are mixed emotions abound on DS9. Having revealed her secret regarding the Prophets to the disguised Dukat, Kai Winn turns her back on them, only to be convinced by Dukat to embrace the Pah Wraiths. On the home world of Cardassia, Legate Damar mounts a resistance to the Dominion.

After an attempt is made on Garak's life, Odo conducts the investigation on who tried to murder the Cardassian tailor - and why.

When Starfleet institutes martial law to combat the Changeling Menace, Sisko begins to question if the Dominion is the real threat.

While a Romulan delegation tries to get information about the Dominion, O'Brien gets visions of unpleasant things that are about to happen in the future.

Kira gets sent behind Cardassian lines in an effort to train them in resistance fighting. When Dr. Bashir learns of the deadly disease that Odo is infected with, he's met with barriers when trying to obtain his medical records from Starfleet. Martok gets blindsided by Gowron when he arrives on DS9, announcing that he has assumed command of the Klingon fleet.

Dr. Bashir fights to save Garak's life when a device implanted in his brain, designed to alleviate pain in the event of torture, begins to malfunction and is slowly killing him.

Instead of waiting for the Jem'Hadar to attack, Sisko wants to try a different approach. He wants to take a new class starship to try to find the Founders.

The discovery of an infant Changeling gives Odo a chance to correct what he sees as the "mistakes" in his upbringing. But as Starfleet's pressure for results grows, he has to turn to his "father," Dr. Mora

While making plans to attend a medical conference on the Romulan home world, Dr. Bashir is contacted by Sloane of Section 31 and recruited to determine the health of a high-ranking Romulan official. Things turn more desperate though, when the ranking Starfleet admiral traveling with him, who knows about Section 31's interest in the conference mysteriously suffers a brain aneurysm. Dr. Bashir's curiosity is peaked when he finds out Sloane is traveling with the group as well.

Captain Sisko has a full sensory vision of himself as an under-appreciated science fiction magazine writer in 1950s America.

Sisko and his crew crash on a barren world when their commandeered Jem'Hadar ship is shot down. They encounter Jem'Hadar who crashed there earlier, and have taken Nog and Garak hostage in exchange for medical aid for their Vorta overseer.

While Worf helps Quark to pursue his former wife Grilka, O'Brien and Kira grow uncomfortably close to each other.

When Sisko is picked to head up an attack on the Cardassian homeworld, the Prophets appear to him in a vision, warning him of impending doom if he leaves the station.

Dr. Bashir and Chief O'Brien go to extreme measures to try and track down a cure for Odo.

O'Brien tries to re-integrate to life on the station after serving 20 years in a virtual prison.

The DS9 cast discovers a small colony on a remote world that was originally populated by them 200 years earlier due to a time-travel accident with the Defiant. The current colonists lives depend on making sure that accident happens again, even though they've now forwarned the crew that it will happen. Each crew member needs to decide if they are willing to give up their lives on DS9 in order to preserve the history of the colony.

Thomas Riker, impersonating Will Riker, steals the Defiant in order to fight with the Maquis. Sisko assist Gul Dukat on Cardassia Prime in stopping the ship entering Cardassian territory.

The station goes into lockdown and the crew is endangered when an old Cardassian security program is accidentally activated.

Sisko, Bashir and Dax are accidentally sent to San Francisco in the 21st century due to a transporter malfunction, and must figure out how to get back to return without changing the time line.

The destruction of a Cardassian ship leads Sisko, Dukat, and Sisko's old friend Cal Hudson to the fact that there is an unofficial war between the Maquis and the Cardassians.

Chief O'Brien's world is turned upside down when for no reason whatsoever he is being ignored by his family and friends and is being closed out of every essential job on the station.

Odo begins his recovery from the deadly disease as Dr. Bashir informs him of Section 31's intentions of wiping out his race. A resistance mission goes bad for Kira and Garak and they end up hiding in the basement of the house that Garak grew up in, where they learned that Legate Damar has apparently become a casualty of war, despite him also hiding with them. Quark is chosen by the Grand Nagas as his successor upon his impending retirement to Risa.

At the request of the Grand Nagus, Quark puts together a mission to rescue Quark's mother, who is in the hands of the Dominion.

Ezri joins Sisko and his family on his quest for the Orb of the Emissary. Colonel Kira mounts a blockade around a Bajoran moon where the Romulan alliance has deposited an ammunitions dump, claiming it in the name of defense for a Romulan hospital. And Quark joins the rest of the DS9 crew as they join Worf aboard a Klingon warship as they mount a dangerous mission in Jadzia Dax's name in an effort to get her spirit into Stovokohr, the Klingon equivalent of Heaven.

Kira finds herself on Cardassia as a Cardassian. She is told she is called Iliana Ghemor and was a Cardassian spy.

Odo relives some terrible and tragic memories of a past investigation when he was the constable on Cardassian-occupied Deep Space Nine, then named Terok Nor.

Severely depressed at his serious war wound, Nog retreats into Vic Fontaine's holosuite program while the singer tries to help him.

Major Kira takes a romantic interest in a Bajoran radical from the other universe who transports himself into her universe and onto DS9.

The Wadi from the Gamma Quadrant are to make first contact and decide to visit DS9. When they catch Quark cheating they let him off by playing a special game.

While vacationing on Risa, Worf and Dax meet a group of fundamentalist protesters who claim that the Federation has gone soft.

Quark's mother and the Grand Nagus show up on DS9, announcing a new amendment to the Bill of Opportunities he has instituted on the home planet of Ferenganar, and then follows up with the announcement, that, due to the new amendment, chaos has followed and he has been deposed.

Dax falls in love with one of the residents of a multi-dimensional planet, while on DS9 an alien requests a holosuite program of Kira from Quark.

Quark and Rom have to rescue Grand Nagus Zek who is being held captive in the Alternate Universe.

A mysterious woman approaches Jake about his future as a writer. Odo promises to do whatever it takes to help Lwaxana Troi keep her baby over the father's wishes - even if it means marrying her himself.

While noted scientist Gideon Seyetik is preparing for an ambitious project, re-igniting a star, Sisko is intrigued by a woman who keeps disappearing.

While Sisko tries to negotiate an agreement between two Bajoran factions, he orders O'Brien to escort Bashir to an emergency that endangers a village.

Dr. Bashir must use extraordinary measures to prolong Vedek Bareil's life long enough to allow Bareil to complete sensitive peace negotiations between the Bajorans and the Cardassians.

The Chief's daughter gets caught in a time displacement and when they get her back, she is considerably older.

Rao Vantika, a captured criminal, is badly burned and dies in Bashir's arms. . .but the criminal's captor believes he is still alive.

As Lwaxanna Troi visits the station for a Bajoran festival, the crew is stricken with intense romantic attractions to one another.

Ezri travels to her family home in search of Chief O'Brien who has discovered a murdered woman connected with the family and the Orion Syndicate.

After being attacked in the infirmary, Dr. Bashir has a dual mystery on his hands: what has happened to the station while he was out and why is he aging so rapidly now?

Kira is kidnapped and taken to Empok Nor by a member of a Pah'Wraith cult and discovers the group leader is Gul Dukat.

A new arrival to the station with a special gravity-based disability appeals to Bashir's heart; meanwhile an old associate of Quark's comes to the station to kill the barkeep.

Sisko and Chief O'Brien discover a colony that lives without technology.

A race that has been conquered twice over, one of the conquerors being the mysterious Dominion, comes to the station seeking aid and a new home.

After receiving some disturbing information for Gul Dukat, Major Kira seeks Sisko's approval as Emissary to travel back in time to find out the truth about her mother. Meanwhile, Chief O'Brien and Dr. Bashir discuss a holosuite program surrounding the Battle of the Alamo.

Quark meets his match when a new rival opens a casino opposite Quark's Bar on the Promenade; meanwhile the station is suffering issues of high improbability.

Kira must convince an old Bajoran farmer to leave a moon becoming uninhabitable due to mining operations. Jake and Nog try to trade off Cardassian yamok sauce.

Odo becomes romantically attached to a woman working with the Orion Syndicate.

Vedek Bareil is targeted by fellow Kai candidate Vedek Winn as having been a collaborator with the Cardassians during the Occupation.

Dax investigates if an unusual energy reading is dangerous for the station when all of the sudden people's imaginations really come alive, causing chaos.

After showing Bajoran spiritual leader Kai Opaka the wormhole, she, Sisko, Bashir and Kira crash land on a moon. Kai Opaka dies and the three meet the unfriendly locals.

The Trill homeworld is the setting, as Sisko and Bashir take Jadzia home for treatment when she begins experiencing hallucinations after playing a tune she can't recall.

Dr. Bashir attempts to bring one of his genetically engineered friends out of the catatonic state she is in, and when he is successful, he begins to fall for her.

To help find the apparently untraceable murderer of a young ensign, who had recently received a battlefield decoration, Ezri Dax reluctantly calls up the residual consciousness remnant of her symbiont’s past, the psychopathic murderer host, Joran.

A Trill named Arjin comes to DS9 to learn what it is to be a Trill with a symbiont but finds his teacher, Dax, to be less than he expected.

A mysterious assassin begins wiping out all the members of Kira's old resistance cell.

Out of nowhere the entire station's command staff, apart from Odo, become power hungry and vie to defeat each other by forming secret alliances and plotting assassinations. Needless to say, Odo tries to figure out how this mysterious behavior was influenced.

News arrives that Kai Winn has also become Bajor's political leader. She asks Kira to negotiate with an old resistance friend about returning soil reclamators.

Q, the Enterprise-D's consistent omnipotent annoyance, comes to harass the DS9 crew when his traveling companion, Vash, refuses to travel with Q any longer.

The Ferengi's greatest politician and leader, the Grand Nagus, comes to the station. He seems very interested in Quark's bar.

Worf, Dax and the Klingon Dahar master Kor set out to find an ancient lost relic: the Sword of Kahless.

Quark doesn't know whether to be panicked or overjoyed when he learns that his mother is the new lover of the Grand Nagus.

Tahna Los, a former Bajoran terrorist during the Occupation, asks Sisko for asylum on DS9. Meanwhile, the station's last Cardassian inhabitant, Garak, possibly a former spy for the Cardassian government, proves an interesting mystery to Dr. Bashir.

Ibudan, a criminal/murderer Odo has dealt with before, returns to DS9 only to be murdered shortly after. . .leaving Odo to be the prime suspect. Meanwhile, Jake and Nog's trouble making prompt Keiko to do something helpful for the station's children.

After searching out and finding Odo, another changeling asks him to leave DS9 with him, even though the rest of the crew aren't convinced the new changeling is not part of the Founders.

When a Cardassian official that thinks of Kira as his daughter is dying, he agrees to reveal all he knows to her. But the experience dredges up Kira's memories of her own father's death.

A man named Croden tells Odo he can take him to a place where aliens much like Odo himself exist, which would help Odo find out where he truly comes from.

Odo and Dr. Mora Pol, Odo's 'father', discover a life form similar to Odo on a Gamma Quadrant planet.

A Cardassian woman, who was once a former flame of Quark's, visits the station under dubious circumstances.

A jealous Trill, who had waited his entire life to receive a symbiont but never had, decides to steal one. . .Dax's!

Quark must wrestle with his conscience when he becomes involved with arms merchants.

Lenara Kahn, the new host of the wife of Dax's former host Torias, comes to the station. While they're not allowed to renew their relation, there's still a spark.

Odo tries to change the nature of a Jem'Hadar boy that Quark finds, while Sisko tries to break his son's relationship with a 20 year old Dabo girl.

Serving with his recruit son aboard a Klingon vessel, Worf finds his relationship with his son strained. Meanwhile, strained relationships abound on DS9 between Major Kira and Gul Dukat.

First Minister Shakaar visits the station, despite a threat of assassination. He falls in love with Kira much to Odo's dismay.

Jake and Nog's runabout comes under attack from the Jem'Hadar. They are rescued by the Valiant, a ship manned by Red Squad, a elite group of young Starfleet cadets.

Sisko tries to convince Ezri to stay in Starfleet and serve aboard DS9, as Ezri tries to get to know Jadzia's friends aboard the station, especially Worf. Meanwhile, Garak tries to deal with a severe bout of claustrophobia.

Chief O'Brien goes undercover to infiltrate an Orion crime ring.