About
Summer Glau is an American actress celebrated for her work in science fiction and fantasy television. She gained widespread recognition for her role as River Tam in the cult favorite *Firefly* and its continuation film *Serenity*. Glau further solidified her presence in the genre with notable roles in *The 4400*, *Terminator: The Sarah Connor Chronicles*, and *Arrow*. Her performances are often praised for her ability to portray complex and physically demanding characters.
Career Timeline
Firefly Breakthrough River Tam
Glau lands the role of River Tam in *Firefly*.
Serenity Film Continuation
She reprises her role in the *Firefly* film *Serenity*.
The 4400 Role
Glau appears in *The 4400*, furthering her sci-fi career.
Terminator: SCC Star Role
She stars in *Terminator: The Sarah Connor Chronicles*.
Arrow Recurring Character
Has a recurring role in *Arrow*, maintaining visibility.
Sci-Fi Genre Actress
Glau is remembered for her roles in sci-fi TV shows.
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Last updated: February 21, 2026