4-15: Bar Association
Quark’s frustrated employees organize a union and strike, prompting intervention from Liquidator Brunt of the Ferengi Commerce Authority.
4-09: Our Man Bashir
A transporter mishap converts several crewmembers into spy-themed holosuite characters, with their true memories erased and their lives linked directly to the program.
4-01: The Way of the Warrior, Part I
When a Gowron-lead fleet of Klingon attack ships arrives at DS9, Sisko calls in a familiar Klingon expert for reinforcement.