Robert O'Reilly

When Picard is chosen to mediate in a Klingon power struggle, Worf is reunited with his former mate and their son.

Picard tries to keep the Federation neutral when the Klingon Empire faces civil war, and Worf struggles with divided loyalties.

While Worf is visiting the Followers of Kahless, who faithfully await the return of the legendary Klingon warrior, Kahless miraculously materialises and claims control of the Klingon empire.

Sisko refuses Worf's resignation. Deep Space Nine is attacked by a Klingon war fleet.

Believing the Romulans are behind a Klingon civil war, Picard involves Starfleet, and a Romulan commander reveals a startling relationship.

Counsellor Troi's mother beams herself aboard the Enterprise and sets her sights firmly on Captain Picard.