4-17: Rules of Engagement
Worf faces a tribunal for destroying a ship of Klingon civilians.
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.
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.
4-08: The Sword of Kahless
Worf and Jadzie set out with the legendary Kor to find the ancient bat'leth of Kahless.