Battlestar Galactica: Season 2-02: Valley Of Darkness

# Original airdate: 22nd July 05
# Production Number: 202
# Filming dates: 
# Executive Producers R.D. Moore, David Eick
# Co-Executive Producer Toni Graphia
# Producer Harvey Frand
# Associate Producer Paul M. Leonard
# Written by: David Weddle & B Thompson
# Directed by Michael Rymer

Starring Mary McDonnell, Edward James Olmos, Jamie Bamber, Katee Sackhoff, James Callis, Tricia Helfer
Co-Starring Michael Hogan,  Grace Park, Alessandro Juliani, Tahmoh Penikett, Kandyse McClure,  Aaron Douglas,  Nicki Clyne, Paul Campbell, Luciana Carro,Bodie Olmos,Michael Tayles, Jennifer Halley,

The Galactica has succeeded in reuniting with the fleet, but it has paid a terrible price: A Cylon computer virus has penetrated its computers, robbing the ship of power, and Cylon Centurions have boarded the Galactica and are battling their way to the ship's vulnerable centers.

in the brig, President Roslin, persuades  marine to release them. Lee Adama appears and orders Billy and Vedder to take the president to the sickbay disaster shelter, where she'll be safe, and heads off with a squad of marines to defend the ship's magazines.

In the CIC, however, Col. Tigh knows from bitter experience what the Cylons are planning. The Centurions aren't going to blow up the ship; they're going to kill the crew by venting the ship's air and then turn its guns on the rest of the fleet. And only Lee — whom Tigh despises for his "disloyalty" to Commander Adama (i.e., support for the president) — and his small squad of marines are in position to stop the Cylon boarding party.

Meanwhile, on Cylon-occupied Caprica, Starbuck and Helo break into her old apartment and fire up her old pickup truck.

Light-years away on Kobol, Chief Tyrol and his crew return from their risky mission to get medical supplies for Socinus, only to realize that the wounded man isn't going make it.