Second Season

2x01 THE HOMECOMING

The second season of DS9 began with a three-part episode. In this, the first part, Major Kira learns that a legendary Bajoran rebel leader (Lee) is still held captive in a Cardassian prisoner of war camp and takes a run-about to free him and the other Bajorans still held captive.

2x02 THE CIRCLE

Kira, having been replaced as liaison officer by Lee Nalis, spends some time with Vedek Bareil and has an encounter with an orb before being taken captive by the Circle. The station crew mounts a rescue attempt and learns who is behind the Circle, and who is supplying arms to them.

2x03 THE SIEGE

The Federation is ordered to vacate the station and turn it over to Bajor. Sisko and the crew, unwilling to turn over the sector and the wormhole to the Circle and their arms supplier, stay behind to hold the station long enough to get evidence to the council that would break the rebellion.

2x04 INVASIVE PROCEDURES

While the station is evacuated due to a space storm, a group of mercenaries, led by a Trill named Verad, seize the station and force Dr. Bashir to give Dax's symbiont to Verad.

2x05 CARDASSIANS

A Cardassian boy, left behind when the Cardassians evacuated Bajor and adopted by a Bajoran family is discovered by Dr. Bashir with the prodding of Garak. Their investigation of the matter leads to a political intrigue involving the boy's real father and Gul Dukat.

2x06 MELORA

A disabled cartographer arrives at DS9 and becomes romantically involved with Dr. Bashir. Meanwhile, Quark runs into an old acquaintance who is out for revenge.

2x07 RULES OF AQUISITION

The Ferengi Grand Nagus Zek comes to the station to give Quark the opportunity of a lifetime - negotiating on his behalf with the Dozai, a new race in the gamma quadrant with a passion for profit that rivals the Ferengis. Meanwhile, Quark finds himself with a new assistant, Pel, who has a terrible secret.

2x08 NECESSARY EVIL

An assault on Quark is tied to a murder investigation started years ago by Odo when he first became the station's constable while the station was still under Cardassian rule. The episode is well filmed and the story within the story of the old investigation is well integrated into the story of the investigation into Quark's assault.

2x09 SECOND SIGHT

Sisko falls for a beautiful and mysterious woman who happens to very closely resemble the wife of a scientist visiting the station.

2x10 SANCTUARY

A group of refugees from the other side of the wormhole arrive and the station seeking a mythical planet, which they happen to believe is Bajor.

2x11 RIVALS

A con man opens up a new gambling parlor on board Deep Space Nine in direct competition with Quark's and Quark in none too happy about it. Meanwhile, the crew of the station attempt to discover the reason behind the unusual number of odd accidents, and other bad luck experienced by people on board in the last few days.

2x12 THE ALTERNATE

The scientist who found Odo finds similar DNA traces on another planet and he and Odo bring back a life form with similar shape-changing abilities. But the life form dies on the station and shortly thereafter, strange things begin to happen which indicate that an hostile alien life form is loose on DS9.

2x13 ARMAGEDDON GAME

O'Brien and Dr. Bashir are sent to help the T'Lani and the Kelleran races destroy a biological weapon that was used in their formerly endless war. But, O'Brien gets infected and both are trapped on a desolate planet when the two formerly warring races unite to kill the two of them.

2x14 WHISPERS

O'Brien returns to the station after discussing security arrangements with the Paradan's - a race besieged by civil war who are planning a peace conference at the station. However, O'Brien finds everyone on DS9 acting weirdly and begins to suspect they've been taken over by someone or something that wants to destroy the conference.

2x15 PARADISE

Sisko and O'Brien find a lost colony ruled by a woman who is militantly anti-technology.

2x16 SHADOWPLAY

Dax and Odo find a previously unknown planet whose inhabitants are mysteriously, and literally, disappearing. Meanwhile, Sisko arranges for Jake to be apprenticed to O'Brien in preparation for his attending Starfleet Academy.

2x17 PLAYING GOD

Before Trills are merged, initiates are evaluated by older, more experienced Trills to determine if they are fit for merging. Dax is assigned an initiate named Arjin for evaluation and neither quite knows what to expect or how to handle the situation. Meanwhile, while flying a runabout through the wormhole, Dax and Arjin encounter a strange phenomena which they bring back to the station and later discover that it's a proto-universe which is expanding and will soon destroy the station unless they destroy it, and the possibly intelligent beings inside, first.

2x18 PROFIT AND LOSS

Natima, Quark's old flame, a Cardassian, returns to the station pursued by a Cardassians warship. She, and Her dissident students, advocate a democratic Cardassia and support removing the power the military now has. Naturally, the military wants her and her students killed.

2x19 BLOOD OATH

Three old-familiar Klingon faces in the Star Trek universe meet at Deep Space 9 looking for Curzon Dax to help them fulfill a blood oath the four of them once took to find and kill a ruthless pirate. They are naturally dismayed to find that Curzon Dax is now Jadzia Dax but the new Dax entity feels just as loyal as Curzon would have been and joins them on their quest.

Fans of the original Star Trek series, should remember the three Klingons played by their original actors: Kor (John Colicos), first appeared in the episode "Errand of Mercy", Kang (Michael Ansara) first appeared in "Day of the Dove" and Koloth (William Campbell, who also appeared in "The Squire of Gothos") appeared in "The Trouble with Tribbles".

2x20 THE MAQUIS, PART 1

In the Star Trek: The Next Generation episode ``Journey's End'' it was revealed that a truce with the Cardassians had been established and a neutral zone had been created but that several colonies, both Cardassian and Federation, found themselves on the wrong side of the zone. None of the colonies wishes to relinquish control of the planets they worked so hard to claim so instead, Cal Hudson (and others) attempt to arrange a peace. But the Cardassians seem to have other plans and war appears to be breaking out in the colonies. Sisko finds himself in the middle of the war when the Bok'Nor is blown up by a saboteur at DS9. Sisko's unlikely partner in getting to the bottom of what's going on - none other than Gul Dukat, the former commander of DS9.

2x21 THE MAQUIS, PART 2

Sisko finds himself trying to rescue Gul Dukat from the Maquis while trying to obey Starfleet's orders to stop the Maquis and bring peace back to the Volon colonies.

2x22 THE WIRE

Dr. Bashir must find a way to save his Cardassian friend Garak who is suffering from great pain caused by a device implanted in his brain by Cardassian intelligence.

2x23 CROSSOVER

Kira and Dr. Bashir, returning from a mission on New Bajor, experience problems in the wormhole with their warp core and find themselves in the universe first seen in the old series episode, ``Mirror, Mirror'', many years after Kirk visited and, apparently disrupted, their timeline. In this universe, the Cardassians and Bajorans are part of an alliance that enslaves Terrans.

2x24 THE COLLABORATOR

Vedek Winn and Vedek Bareil are both in line to be the new Kai of Bajor. The choosing of the new Kai is only days away when Vedek Winn comes to Deep Space 9 with a startling revelation for Kira Nerys - her friend and lover Vedek Winn may have been a collaborator with the Cardassians and may have been responsisible for the massacre of over forty Bajorans.

2x25 TRIBUNAL

Miles and Keiko leave for vacation on a runabout. But, before they get very far, their runabout is intercepted by Gul Evek on a Cardassian warship. Instead of the relaxing vacation, Miles finds himself taken to Cardassia Prime, to stand trial for smuggling weapons to the Maquis.

2x26 THE JEM'HADAR

Sisko plans to take Jake on a field trip to a small, quiet planet on the other side of the wormhole so Jake can work on a science project. Jake asks if Nog can join them since Nog also has a science project to do. Quark seizes on this opportunity to tag along, ostensibly as Nog's guardian but with his own plans for convincing Sisko to allow Quark to advertise on the station's monitors. The field trip is interrupted though by Eris, who is escaping from the Jem'Hadar - members of the Dominion. Soon Sisko, Quark and Eris find themselves prisoners of the Dominion while Jake and Nog try to get back to DS9 to get a rescue party. The Dominion attacks the party, and even destrois the Galaxy class vessel USS Odyssey.