As Adama and Laura debate using biological weapons against the Cylons, Baltar is being tortured by D’Anna, intent on determining who is responsible the virus.

A team from Galactica boards the infected baseship and finds hundreds of dead and dying Cylons. It’s an intelligence windfall. Adama orders the team to tap into the dying Hybrid and to return with the surviving Cylons.

Adama sends Starbuck in to interrogate them. The deal she offers the Cylons is simple: cooperate and you get the vaccine and live; resist and you die – forever. Simon (Rick Worthy) reveals that Baltar is helping the Cylons find earth and Lee gets an idea: if the virus is spread by resurrection, it may be possible to set a trap and use it to destroy the Cylon race. Helo (Tahmoh Penikett) is outraged – this is genocide, the extinction of his wife’s race – but Adama and Laura take the idea seriously.

Meanwhile, the Cylons hold Baltar responsible for the virus and are torturing him for more information. Number Six talks him through the pain, filling his mind first with pleasure and then with a warning. As Galactica’s trap is sprung and the Cylons move in, Baltar must once again choose between his own people and his captors while Helo must decide how far his loyalties will go.

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