Watch Alias Online (2001)

Where to watch “Alias” (2001) online legally? See US streaming options first, plus English-region fallbacks.

Alias first aired in 2001 • originally associated with ABC • 5 seasons • 105 episodes • around 43 minutes per episode • status: Ended.

If you searched for “watch Alias online” (2001), the safest approach is to verify legal availability in your region (US first, then English-region fallbacks).

It sits in the Action & Adventure, Drama space, which helps set expectations for tone and pacing.

Ratings vary by audience taste—check the synopsis and cast to see if it matches what you like.

This page includes season navigation, episode list, cast, trailer (when available), and legal provider hints to help you decide quickly.

Synopsis

Sydney Bristow, an agent who has been tricked to believe she is working for the U.S. government, is actually working for a criminal organization named the Alliance of Twelve. Upon learning this, Sydney becomes a double agent for the real CIA.

Keywords

central intelligence agency (cia), martial arts, double agent, undercover agent, revenge, los angeles, california, female spy, government agent, criminal organization.

Stills

Similar series

Dark Blue, The Old Man, Nikita, The Equalizer, 24, Lioness, The Equalizer, Berlin Station.

Main cast

Jennifer Garner

as Sydney Bristow

Victor Garber

as Jack Bristow

Ron Rifkin

as Arvin Sloane

Carl Lumbly

as Marcus Dixon

Kevin Weisman

as Marshall Flinkman

Rachel Nichols

as Rachel Gibson

Amy Acker

as Kelly Peyton

Balthazar Getty

as Thomas Grace

Official trailer