Revelations

Revelations is an episode of the TV series, Battlestar Galactica, and aired during the show's fourth season.
==Plot==
The Cylons, led by a Number Three, decide to take Laura Roslin and the Colonial soldiers aboard the Basestar hostage to bargain for the secretive "Final Five" Cylons currently on the Battlestar Galactica. Before the departure of Admiral William Adama  from the Basestar, President Roslin secretly orders him to attack and destroy the Basestar, in the event that negotiations between the Cylons and Humans go poorly. D'Anna asks initially that the four can leave at their own will, but after Tory Foster joins them, D'Anna reneges and starts to order the execution of her hostages. Adama subsequently passes along Roslin's order to his son and acting President Lee Adama, who reluctantly agrees.
After Tory's defection, Colonel Saul Tigh admits to his friend and commanding officer that he too is a Cylon in order to prevent what he sees as useless slaughter. Tigh even offers himself up to be airlocked as a bargaining chip. Horrified, Adama orders Tigh to be arrested. As Tigh is escorted away, Adama tears apart his office in a fit of rage and despair. Lee uses Tigh's life, as well as those of fellow Cylons Samuel Anders and Galen Tyrol, as leverage, but D'Anna refuses, at one point arming the Basestar's nuclear weapons. Gaius Baltar, also a hostage, tries to reason with D'Anna.
At Anders and Tyrol's request, Kara "Starbuck" Thrace re-inspects the Viper fighter she was piloting in the third-season finale "Crossroads", and discovers a hidden signal being received by the fighter. She halts the execution of Tigh, and explains to the Galactica's crew that she presumes the signal originates from Earth. Though everyone agrees that it is unlikely, D'Anna and Lee form an alliance to find Earth.
In the final scene of the episode, the Fleet jubilantly arrives at Earth. Adama announces to the Fleet that their journey is finally over. A party of humans and Cylons travel down to the surface. Landing in the ruins of a large city, they are left speechless when they find Earth to be a desolate, radioactive, lifeless world.
==Cast==
*Edward James Olmos as Rear Admiral William Adama
*Mary McDonnell as Laura Roslin
*Jamie Bamber as Commander Lee "Apollo" Adama
*James Callis as President of the Twelve Colonies Gaius Baltar
*Tricia Helfer as 
**Caprica Six
**Messenger Six
*Grace Park as 
**Lieutenant Sharon "Boomer" Valerii
**Sharon Agathon
**Number Eight
*Michael Hogan as Colonel Saul Tigh
*Aaron Douglas as Chief Petty Officer Galen Tyrol
*Tahmoh Penikett as Captain Karl "Helo" Agathon
*Michael Trucco as Samuel T. Anders
*Alessandro Juliani as Lieutenant Felix Gaeta
*Kandyse McClure as Lieutenant Anastasia Dualla
*Lucy Lawless as D'Anna Biers
*Callum Keith Rennie as Leoben Conoy
*Rekha Sharma as Tory Foster
*Bodie Olmos as Brendan "Hot Dog" Costanza
*Keegan Connor Tracy as Jeanne
*Brad Dryborough as Lieutenant Louis Hoshi
*Vincent Gale as Lieutenant Peter Laird
*Don Thompson as Specialist 3rd Class Anthony Figurski
*Alexandra Thomas as Hera Agathon
*Lara Gilchrist as Paulla Schaffer
*Heather Doerksen as Sergeant Brandy Harder
*Finn R. Devitt as Nicolas Tyrol
*Sonja Bennett as Specialist 2nd Class Marcie Brasko
*Barry Nerling as Corporal
==Appearances==
===Characters===
*Lee "Apollo" Adama
*William Adama
*Karl "Helo" Agathon
*Gaius Baltar
*Anastasia Dualla
*Felix Gaeta
*Calandra Henderson
*Number Eight
**Sharon "Boomer" Valerii
**Sharon Agathon
*Number Six
**Messenger Six
*Laura Roslin
*Saul Tigh
*Kara "Starbuck" Thrace
*Galen Tyrol
===Locations===
*The Fleet
===Species===
*Cylon
**Centurion
**Humanoid Cylon
**Raider
*Human
===Technology===
*FTL
*Wireless
===Vehicles and vessels===
*Basestar
*Colonial One
*Galactica
*Raider
*Raptor
*Viper
===Organizations===
*Colonial Fleet
*Colonial Government
*Colonial Marine Corps
==Production==
==Sources==
==External links==
*Podcast
4.10