Ep 21. Second Double

Sydney Bristow (Jennifer Garner) is a top agent for the CIA who is able to balance her personal and professional life with her duties to the United States. In Alias season 2 episode 21, titled "Second Double," Sydney finds herself on a mission to obtain a device that could potentially destroy the world, but things quickly spiral out of control when a second double of Sydney appears.

The episode begins with Sydney and her team being sent on a mission to retrieve the device. As they are breaking into the facility, things start to seem a little off. Sydney begins to have flashbacks and memories of a past mission that she completed, and she doesn't understand why. As they continue to search for the device, Sydney runs into a woman who looks exactly like her, down to the same clothing and hairstyle.

Sydney is confused and shocked, wondering if she is seeing things, but the woman introduces herself as her double, Anna. Anna is from Russia and was created to infiltrate the CIA by posing as Sydney. Sydney is alarmed and tries to get answers from Anna, but she remains silent. Sydney becomes even more suspicious of Anna's intentions, convinced that she has something to do with the device they are looking for.

In the midst of the chaos, Sydney's father Jack also appears on the scene. Jack has been in prison for years and has been released on the condition that he helps the CIA with their mission. Sydney has a difficult time reconciling with her father and is unsure of his loyalty. The team eventually retrieves the device but they soon discover that Anna has also obtained it.

The rest of the episode sees Sydney and Anna facing off, with Sydney determined to stop Anna from using the device to cause harm. Sydney must navigate through her own memories and past experiences to ultimately defeat Anna and save the world from destruction.

Alias season 2 episode 21 is full of action and suspense, with a surprising twist that keeps viewers on the edge of their seats. The episode also touches on Sydney's complex family dynamic and her struggle to trust those closest to her. With strong performances from the cast, "Second Double" is a must-watch for fans of the show.