Alias/The Descent

The Descent
Season 4, Episode 20
Airdate	May 18, 2005
Written by	Jeffery Bell
Directed by	Jeffery Bell
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Alias — Season Four

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The Descent is the twentieth episode of the fourth season of Alias, and the eighty-sixth episode overall.

Starring: Jennifer Garner (Sydney Bristow), Ron Rifkin (Arvin Sloane), Michael Vartan (Michael Vaughn), Carl Lumbly (Marcus Dixon), Kevin Weisman (Marshall Flinkman), Mia Maestro (Nadia Santos), Greg Grunberg (Eric Weiss) (credit only)

and Victor Garber (Jack Bristow)

Special Guest Stars: Sonia Braga (Sophia Vargas / Elena Derevko), Angela Bassett (Hayden Chase), Isabella Rossellini (Katya Derevko)

Guest Starring: Nick Jameson (Lazlo Drake), Jeff Yagher (Grayson Wells)

Co-Starring: Andrew Divoff (Kevlar Vest), Jared Poe (Young Agent), Braeden Marcott (Salesman), Jeremy Brandt (Lead Agent), Jodi Fung (Nurse)

Arc Advancement

Happenings

• Sophia Vargas is discovered to be Elena Derevko and that she led the Covenant and was responsible for recent events such as the Sloane doppelganger and the ruse of Vaughn's father.

• The DSR is ransacked of its Rambaldi artefacts. Assembling them based on a manuscript to bring forth Rambaldi's final prophecy was Sloane's objective when he and left with Nadia to find the Sphere of Life. He warns that in Elena's hand, it could be apocalyptic.

• Dixon reveals that while at Elena's base, he saw someone shackled being put in the back of a truck. It was Irina.

Characters

• Vaughn plans to propose to Sydney.

• Sloane forms an alliance with Elena.

• Dixon is shot and Director Chase watches over him by his bedside.