"Valley of Darkness" is the second episode of the second season of the reimagined Battlestar Galactica television series. It aired originally on the Sci Fi Channel on July 22, 2005. In the episode, Cylon Centurions board Galactica. The crew, led by Lee "Apollo" Adama, beat them back but suffer heavy casualties. On Kobol, Gaius Baltar's visions continue, and Chief Galen Tyrol euthanizes a dying comrade. On Caprica, Starbuck and Helo relax in Starbuck's apartment and then take her truck out of the city. According to executive producer Ronald D. Moore, production and post-production for "Valley of Darkness" was contentious. Nonetheless, critics reviewed it favorably. The episode received a nomination at the 2005 VES awards for the (animated) Centurions. Plot Having just jumped away from a battle with Cylons and rejoined the civilian fleet, a Cylon virus forces Galactica to switch to a limited emergency power as the crew fights off a boarding party of Cylon Centurions. Apollo releases President Roslin from the brig and she makes her way to sickbay just as the last of the Centurions are destroyed. With Galactica safe, Doctor Cottle makes his way to operate on a still-critical Commander Adama. On Kobol, Tyrol and Cally return to the rest of the stranded survey team with the medical kit they had retrieved for a wounded Socinus only to learn that his death is inevitable. Tyrol reluctantly euthanizes him with lethal dosage of painkillers. On Caprica, Starbuck and Helo stop at Starbuck's old apartment, where they listen to a recording of Starbuck's father playing the piano as Starbuck reflects on her life. They retrieve the keys to Starbuck's truck and escape the city in it. Symbolism In his podcast commentary on "Valley of Darkness", Moore discusses his views of the symbolism appearing in the episode. He connects Baltar's dream about Adama killing the baby to episodes of infanticide in the Bible, such as the Massacre of the Innocents. The symbolism is intended to contextualize the magnitude of the threat to the baby Baltar is supposed to perceive. Baltar comments that Six's description of human sacrifice on Kobol differs greatly from the accounts of the in-universe Scriptures, which describe the planet as a paradise. Moore connects this with the Biblical story of the Garden of Eden. As in the case of Eden, he says, humanity was driven out of paradise as divine punishment for its sins, except Kobol was