Robert O'Reilly

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

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

Worf must choose between Starfleet and his people when the Klingons withdraw from a peace treaty and start a war involving Deep Space Nine.

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

The Klingons join the Federation's fight against the Dominion as Gul Dukat reveals his self-serving allegiance.

T'Pol prematurely suffers symptoms of Pon Farr, the Vulcan mating cycle, in which she must mate or die, and a bounty hunter abducts Archer to return him to the Klingon home world to face punishment as a prison escapee.