At this moment, Sydney Bristow learns that her mother hired Tomasaki to assasinate her (oh, and she ran Tomasaki through with the Sintaro Sword). This is a huge moment in season 4 and a huge moment for Jack- as Sydney, in a small way, understands why her father killed her mother- to protect her.
I love the character of Tomasaki. I feel like for the first time Sydney meets an enemy she doesn't believe she can beat. Tomasaki killed Nadia's friend and Irina hired him to kill one of the number one CIA agents. There are moments, in the underground parking garage in the dark, where Sydney feels vulnerable, maybe even scared. I think Tomasaki is a great character because he is able to make Sydney feel this way- he makes her human. Alas, Sydney does defeat this nemisis- as usual.
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