Alias Season 4 Episode 20 The Descent ( Air Date 2005-05-18 ) Genre Action & Adventure, Drama category. Overview "After a tactical group infiltrates the DSR and steals Rambaldi artifacts, CIA director Hayden Chase discovers that the alarms at the DSR were disabled from Nadia's computer, allowing the raid to happen, and shows up at the apartment to question her. Soon Sloane and Jack arrive and suspect that Sophia, who had access to the computer while she was living with Syd and Nadia, is Elena Derevko. They follow her trail to a dead Rambaldi follower, a stunning betrayal, and a presumed dead family member...".
Alias Season 4 Episode 20 The Descent
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- Watch: Alias Season 4 Episode 20 The Descent on CWR-CRB
- Stars: Jennifer Garner, Victor Garber, Ron Rifkin, Carl Lumbly, Kevin Weisman, Rachel Nichols, Amy Acker, Balthazar Getty
- Director: Jeff Pinkner, André Nemec, Josh Appelbaum, Jeffrey Bell, Jesse Alexander, Breen Frazier, Ken Olin, J.J. Abrams, Michael Giacchino
