Stardate: Unknown. 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.

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

Stardate: Unknown. Jake, reporting from the front lines, sees what war truly is.

Stardate: 4523.7. In this celebration of the 30th anniversary of The Original Series, the disgraced Klingon spy Darvin travels back in time to undo his century-old defeat by James Kirk. The DS9 crew must track him down and stop him, while blending in with the crew of the original Enterprise NCC-1701.

Stardate: 50814.2. The DS9 crew discovers a colony that, due to a time travel accident, turns out to be inhabited by the crew's own descendants.

Stardate: Unknown. Bashir agrees to counsel a group of eccentric, genetically enhanced humans ... and finds himself reevaluating his own enhanced nature when they calculate a disastrous prediction for the outcome of the Dominion War.

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

Stardate: 52861.3. With the Cardassian resistance movement crushed, Kira, Damar, and Garak find themselves trapped behind enemy lines. Meanwhile, Grand Nagus Zek announces his retirement and plans to name Quark his successor.