About Summer Glau
Summer Glau is an American actress best known for her roles in science fiction and fantasy television series: as River Tam in Firefly (2002) and its continuation film Serenity (2005), as Tess Doerner in The 4400 (2005–2007), as Cameron in Terminator: The Sarah Connor Chronicles (2008–2009), and as Isabel Rochev / Ravager in Arrow (2013–2014). Glau's first television credit was a guest role on a 2002 episode of the television series Angel. In 2008, she won the Saturn Award for Best Supporting Actress on Television for her portrayal of Cameron. She also provided narration in the Realm audio podcast Ctrl-Alt-Destroy, in which the protagonist was a video game designer who discovers that the game she created has been stolen as part of a top secret project. In 2006, Glau played Tess Doerner, a paranoid schizophrenic returnee in Season 2's premiere of The 4400, and became a recurring character from Season 3 onwards.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.