4-25: Broken Link
When Odo is struck with an unknown illness, Sisko seeks help from The Founders, who enact a punishment against Odo for harming another Changeling.
4-21: For The Cause
Sisko's loyalties are tested when his girlfriend, Kassidy Yates, is an accused Maquis collaborator.
4-08: The Sword of Kahless
Worf and Jadzie set out with the legendary Kor to find the ancient bat'leth of Kahless.
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.