Sine Qua Non (Battlestar Galactica)
| "Sine Qua Non" | |
|---|---|
| Battlestar Galactica episode | |
| Episode no. | Season 4 Episode 10 |
| Directed by | Rod Hardy |
| Written by | Michael Taylor |
| Original air date | May 27, 2008 |
| Guest appearance(s) | |
"Sine Qua Non" is the tenth episode in the fourth season of the re-imagined Battlestar Galactica. It first aired on television on May 27, 2008. The episode name is a Latin term (it translates as "without which [there is] nothing") referring to something essential that cannot be done without. The survivor count shown in the title sequence is 39,674.
The episode continues from the previous episode "Guess What's Coming to Dinner?" with the mortally injured Cylon Natalie being taken to the sickbay. After seeing visions of green trees, she dies. President Laura Roslin visits the Basestar accompanied by half of the pilots. After the hybrid is plugged in, the Basestar immediately jumps away to unknown coordinates. The Quorum must find a replacement for Roslin, who is assumed kidnapped. The Quorum can elect a temporary president, so Lee Adama solicits the help of a reluctant Romo Lampkin in choosing the best candidate.
Admiral Adama questions Lt. Sharon "Athena" Agathon in his quarters regarding why she shot Natalie. Athena confesses to Adama about the visions she had of Natalie and Gaius Baltar taking away her half-human, half-Cylon child, Hera. She is sent to the brig.
Admiral Adama must now both protect the fleet and find the rebel Basestar with Roslin and his troops on board. He orders Colonel Saul Tigh to interrogate Caprica-Six in the brig to try to get information from her about the Cylon hub. Tigh's interrogation/liaison is interrupted when a badly damaged missing Raptor jumps into contact range. The raptor's flight data recorder shows where its jump had originated. A raptor scouting mission to those coordinates finds the remains of a battle with a destroyed Cylon Basestar, Viper and what is assumed to be the hub. Adama does not believe the destroyed Basestar was the rebels' ship with Roslin on board, and he orders four Raptors to remain there in case it returns.
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