When an old enemy, the Cylons, resurface and obliterate the 12 colonies, the crew of the aged Galactica protect a small civilian fleet - the last of humanity - as they journey toward the fabled 13th colony, Earth.
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see all options Availability data: JustWatch
- Seasons
- 4
- Episodes aired
- 73
- Latest aired
- S04E20
- Total runtime
- 2d 6h
Timeline when each season aired
- Season 1 October 2004 – January 2005 13 episodes
- Season 2 July 2005 – March 2006 20 episodes
- Season 3 October 2006 – March 2007 20 episodes
- Season 4 April 2008 – March 2009 20 episodes
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S04E01 He That Believeth in Me
April 4 · 44min find the promo
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During the Cylon attack, Sam Anders has a strange encounter with a Cylon Raider. The crew of the Galactica view Starbuck's return with suspicion and doubt. Gaius Baltar takes refuge with a group of women who believe he has the power to heal others.
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S04E02 Six of One
April 11 · 44min find the promo
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The Cylons learn that the Final Five are in the Colonial fleet. Some of the Cylons want the Cavil model to stop lobotomizing the Raider ships. Starbuck desperately tries to convince the others that the fleet is going the wrong way in their search for Earth.
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S04E03 The Ties That Bind
April 18 · 44min find the promo
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Kara Thrace seeks her own path in the search for Earth while the Cylons face the threat of sentient Centurions. A member of Galactica's crew learns a dark secret about a loved one.
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S04E04 Escape Velocity
April 25 · 44min find the promo
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Gaius Baltar sets off a debate on religious freedom when he promotes his belief in a single God.
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S04E05 The Road Less Traveled
May 2 · 44min find the promo
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Specialist Tyrol continues to sink into despair after his recent loss. He becomes curious about Gaius Baltar's sermons and the following he has attracted. The crew of the Demetrius grow concerned about Kara's mental stability as an old enemy arrives with a tempting offer.
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S04E06 Faith
May 9 · 44min find the promo
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The dying President Roslin and the aggressive Viper pilot Kara Thrace try to accept the new terms of the relationship with the Cylons.
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S04E07 Guess What's Coming to Dinner?
May 16 · 44min find the promo
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President Roslin faces challenges as the Colonials plot with Cylon rebels to destroy a Resurrection Hub.
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S04E08 Sine Qua Non
May 30 · 44min find the promo
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With President Roslin missing along with the cylon base ship a new president must be decided on. Galactica goes on a search for the missing base ship and the Galactica crew members that were on board.
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S04E09 The Hub
June 6 · 44min find the promo
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Colonial Viper pilots plan an attack on the Resurrection Hub with their Cylon rebel allies.
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S04E10 Revelations
June 13 · 44min find the promo
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D'Anna holds President Roslin and other Colonials hostage in order to draw out the Final Five from the Colonial fleet. Col. Tigh believes he has the solution to end the standoff.
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S04E11 Sometimes a Great Notion
January 16 · 44min find the promo
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Kara struggles with the foreboding prediction of the Cylon Hybrid, while Adama and the Colonial fleet face despair over their shocking discovery.
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S04E12 A Disquiet Follows My Soul
January 23 · 44min find the promo
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Tigh and Number Six take their first glimpse at their unborn child, Tyrol offers Adama Cylon technology in return for his fellow Cylons properly reintegrated into the fleet, and an attempted coup leads to a costly struggle to maintain civility.
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S04E13 The Oath
January 30 · 44min find the promo
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Loyalties are made clear when Gaeta orchestrates a coup d'état of the Adama regime. Both prisoners and lives are taken as many of the fed up people work to take over Galactica.
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S04E14 Blood on the Scales
February 6 · 44min find the promo
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President Roslin faces off against Tom Zarek and Lt. Gaeta as they try to take control of the Colonial fleet. Both the alliance with the rebel Cylons and Adama's life are at stake.
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S04E15 No Exit
February 13 · 44min find the promo
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As Sam Anders recovers from his head injury onboard the Galactica, he begins to remember events from ancient Earth. The Final Cylon struggles with the fallout from the Final Five's former plans. One of the humanoid Cylons vows to get revenge for being created in the image of Man. Tyrol informs Admiral Adama about the extensive structural damage on the Galactica.
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S04E16 Deadlock
February 20 · 44min find the promo
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Ellen escapes from Cavil only to face a momentous choice regarding the 13th Tribe and the Final Five Cylons.
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S04E17 Someone to Watch Over Me
February 27 · 44min find the promo
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Kara feels lost while she struggles to cope with Sam's continued coma, meanwhile Boomer faces charges of treason from the Cylons onboard the base ship who blame her for voting against her model during the civil war causing the deaths of thousands of Cylons.
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S04E18 Islanded in a Stream of Stars
March 6 · 44min find the promo
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The rebel Cylons and the Colonial humans react to Hera's kidnapping while the physical condition of the Galactica continues to deteriorate.
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S04E19 Daybreak (1)
March 13 · 44min find the promo
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With Galactica on the verge of falling apart, Admiral Adama readies the ship for what could be its final mission, as Baltar's Six warns that humanity's final chapter is near.
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S04E20 Daybreak (2)
March 20 · 92min find the promo
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Adama and the Galactica crew stake the survival of the human race on their plan to rescue Hera from the Cylon colony in this, the series finale.