The BSG reviews were written from 2005-2009 during the series' original run. Please note that all reviews contain spoilers.
Season 4 (2008-2009)
11/24/2007. Razor — Lee Adama, the new commander of the Pegasus, selects Admiral Cain's protege to serve as his XO in an effort to maintain an identity for the ship's crew. This choice comes with baggage, however, as the traumas from Pegasus' brutal past resurface during a dangerous rescue mission.
4/4/2008. He That Believeth in Me — The crew of Galactica is stunned to learn that Kara is still alive, and quickly becomes suspicious when she claims to have been to Earth. Meanwhile, four members of the crew who have learned they are Cylons must grapple with their new realities.
4/11/2008. Six of One — The crew must contend with Kara, who takes drastic measures to convince Roslin that she knows the way to Earth and is not an instrument in a Cylon trap.
4/18/2008. The Ties That Bind — Tyrol's marriage faces a meltdown amid a series of suspicions by Cally. Meanwhile, deep ideological divisions threaten the Cylons with civil war.
4/25/2008. Escape Velocity — Baltar's religious movement leads to violent conflicts on the ship. Tyrol deals with the aftermath of a personal tragedy. Tigh opens a dialog with the imprisoned Caprica Six.
5/2/2008. The Road Less Traveled — The chain of command on the Demetrius is threatened when Kara considers an alliance with the Cylons brought to her by Leoben. Tyrol, facing a personal crisis, confronts Baltar over his attempts to expand his religious movement.
5/9/2008. Faith — Roslin finds her religious views challenged by a fellow terminal cancer patient who has found solace in Baltar's words. Kara attempts to forge an alliance with a group of renegade Cylons and learn details about her destiny from their Hybrid.
5/16/2008. Guess What's Coming to Dinner? — The rebel Cylons and Demetrius rendezvous with the fleet, where a fragile alliance and an audacious plan are arranged. But can this alliance survive so much inherent distrust?
5/30/2008. Sine Qua Non — The fleet faces turmoil and uncertainty when President Roslin goes missing and is presumed dead and Adama refuses to acknowledge the legitimacy of Vice President Zarek as her successor.
6/6/2008. The Hub — Despite some uncertainty, a joint Colonial/Cylon mission is undertaken to destroy the Cylon resurrection hub and make the entire Cylon race mortal.
6/13/2008. Revelations — A deadly standoff ensues when D'Anna holds Roslin and others hostage and demands Adama turn over the secret Cylons aboard Galactica, who supposedly know the way to Earth.
Webisodes. The Face of the Enemy — Gaeta's Raptor becomes stranded during an emergency jump of the fleet. While awaiting rescue, members of the Raptor's crew begin dying mysteriously.
1/16/2009. Sometimes a Great Notion — The crew of Galactica investigates its biggest discoveries yet concerning Earth, which deal a crushing blow to the morale of the fleet and its leaders.
1/23/2009. A Disquiet Follows My Soul — Tensions rise between the Quorum and Adama when he orders the installation of Cylon technology aboard all ships in the fleet and the rebel Cylons request Colonial citizenship.
1/30/2009. The Oath — Unwilling to tolerate the alliance with the Cylons, Gaeta and Zarek stage a mutiny against the existing leadership of the fleet under Adama.
2/6/2009. Blood on the Scales — Gaeta and Zarek take control of the fleet and intend to put Adama on trial for treason, but must contend with pockets of resistance still trying to quell their mutiny.
2/13/2009. No Exit — Ellen resurrects in the Cylon fleet and engages in an extended war of words with Cavil. Anders suffers a serious brain injury, causing a flood of memories from Earth to return to him.
2/20/2009. Deadlock — Ellen returns to Galactica, upon which the Final Five must make a pivotal decision about whether to remain with the fleet.
2/27/2009. Someone to Watch Over Me — Tyrol is dismayed when the fleet's Cylon allies request that Boomer be tried for treason. Kara confesses her struggles of identity and purpose to a mysterious piano player in the ship's bar.
3/6/2009. Islanded in a Stream of Stars — The battlestar Galactica faces an uncertain future as Adama comes to the slow realization that the ship may be beyond repair and no longer capable of defending the fleet.
3/13/2009. Daybreak, Part 1 — As the residents and crew of the battlestar Galactica pack up to abandon the ship and strip it for parts, Adama realizes he must use the ship for one final mission.
3/20/2009. Daybreak, Part 2 — Adama prepares to take the Galactica and its remaining crew of volunteers on a risky mission to rescue Hera, who may be the salvation of the human and Cylon races.
10/27/2009. The Plan — After the attack on the Colonies, Cavil attempts to finish the job the Cylons started by setting a series of small coordinated attacks in motion from within his secret isolated position on Galactica.