Battlestar Galactica - Season 4 Episode 8 Sine Qua Non
With President Roslin missing along with the cylon base ship a new president must be decided on. Galactica goes on a search for the missing base ship and the Galactica crew members that were on board.
- Genre: Sci-Fi & Fantasy, Action & Adventure, Drama
- Studio: Syfy
- Keyword: artificial intelligence (a.i.), cyborg, spacecraft, space travel, invasion, space, alien planet, space opera, cybernetic
- Cast: Edward James Olmos, Mary McDonnell, Jamie Bamber, Katee Sackhoff, James Callis, Tricia Helfer