Laura and Adama face the possibility that one of their ships has been infiltrated by the enemy.
Boomer worries that she is responsible for a mysterious explosion that causes Galactica to lose more than half of its water.
Apollo is held hostage on a prisoner ship by a group of convicts led by a freedom fighter convicted of terrorism.
Starbuck is forced to admit her role in the death of Adama's son, Zak.
Adama and Lee put the fleet at risk while searching for Kara.
When a Cylon suicide bomber kills three, Adama must reveal to the public that Cylons now look human.
Edward James Olmos
Cmdr./Adm. William Adama
Mary McDonnell
Laura Roslin
Katee Sackhoff
Capt. Kara "Starbuck" Thrace
Jamie Bamber
Capt. Lee "Apollo" Adama
James Callis
Dr. Gaius Baltar