Fair rating?Battlestar Galactica· Season 4 · Episode 8
Sine Qua Non
President Roslin's abduction by the Cylon Hybrid triggers a bitter power struggle within the Colonial Fleet.
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#16In Season 4of 20 rated episodes
#52All-timeof 73 rated episodes
−0.5vs season avgSeason 4 averages 8.5
2008First airedMay 30, 2008
Guest stars
Donnelly Rhodesas Dr. Cottle
Rekha Sharmaas Tory Foster
Kate Vernonas Ellen Tigh
Richard Hatchas Tom Zarek
Mark Sheppardas Romo Lampkin
Kandyse McClureas Anastasia "Dee" Dualla
Leah Cairnsas Lt. Margaret "Racetrack" Edmondson
Colin Lawrenceas Ensign Hamish "Skulls" McCallAlexandra Thomasas Hera Agathon
Judith Maxieas Picon Delegate
Andrew McIlroyas Jacob Cantrell
Iris Palulyas Speaking Delegate Dahlia
Donna Soaresas Gemenon Delegate
Veena Soodas Quorum DelegateCrew
Rod HardyDirector
Michael TaylorWriterShows like Battlestar Galactica
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