Reunion

Dying K'mpec asks Picard to arbitrate the Klingon succession and find his poisoner. K'Ehleyr, who has arrived with Worf's son Alexander, investigates Duras over Khitomer and is killed; she names Duras, and Worf kills him despite Riker's arrival.

• Follows The Emissary (S02E20): Worf and K'Ehleyr spent a night together in The Emissary; in Reunion she returns with their son Alexander.
• Follows Sins Of The Father (S03E17): Duras, whose father Ja'rod was the real traitor, brought the charge against Mogh in Sins of the Father; Worf kills him in Reunion, though Mogh's innocence stays untold.
• Leads to Redemption (S04E26): Picard, who arbitrated the succession in Reunion, is told he is 'already involved' when Duras' family challenges Gowron.
• Referenced by New Ground (S05E10): Alexander, who lost his mother in Reunion, is brought to live with Worf on the Enterprise.

Captain's Log: Stardate 44246.3 We're investigating radiation anomalies reported in the Gamma Arigulon system by the starship LaSalle. Preliminary readings are inconclusive.

Captain's log, supplemental. K'mpec, who ruled the Klingon Empire longer than anyone in history, is dead. We await the arrival of Duras and Gowron, rivals for the leadership of the High Council.

From Memory Alpha. Linked where the credit could be matched to a transcript label.

Starring

• Patrick Stewart as Capt. Jean-Luc Picard (Captain Jean-Luc Picard)
• Jonathan Frakes as Cmdr. William Riker (Commander William T. Riker)

Also starring

• LeVar Burton as Lt. Cmdr. Geordi La Forge (Lieutenant Commander Geordi La Forge)
• Michael Dorn as Lieutenant Worf (Lieutenant Worf)
• Gates McFadden as Dr. Beverly Crusher (Dr Beverly Crusher)
• Marina Sirtis as Counselor Deanna Troi (Counselor Deanna Troi)
• Brent Spiner as Lt. Commander Data (Lieutenant Commander Data)
• Wil Wheaton as Ensign Wesley Crusher (Wesley Crusher)

Guest stars

• Suzie Plakson as K'Ehleyr (K'Ehleyr)
• Robert O'Reilly as Gowron (Gowron)
• Patrick Massett as Duras (Duras)
• Charles Cooper as K'mpec (K'mpec)

Co-stars

• Jon Steuer as Alexander (Alexander Rozhenko)
• Michael Rider as Security Guard
• April Grace as Transporter Technician
• Basil Wallace as Klingon Guard #1
• Mirron E. Willis as Klingon Guard #2

Uncredited co-stars

• Rachen Assapiomonwait as Nelson
• Majel Barrett as USS Enterprise -D computer voice
• Michael Braveheart as Martinez
• Tracee Lee Cocco as Jae
• B.J. Davis as Klingon guard
• Jeremy Doyle as operations ensign
• Eben Ham as operations division ensign
• Tim McCormack as Bennett
• Lorine Mendell as Diana Giddings
• Lincoln Simonds as security officer
• Natalie Wood as Bailey