Summer Glau wil be joining Thomas Dekker and Lena Headey in the upcoming "The Sarah Conner Chronicles," a "Terminator" spinoff series coming to FOX. The series will detail the adventures of Sarah Conner (Headey) and her son John (Dekker) in between the events of "Terminator 2" and "Terminator 3." The name of Glau's character has not yet been announced.

"The Terminator" was a surprise hit when it premiered in 1984.

The film's premise was standard science fiction: from a dystopian future, a killer android (Arnold Schwarzenegger) is sent to our time to assassinate the mother (Linda Hamilton) of the leader of the future human resistance, and the leader's best friend (Michael Biehn) travels back in time to stop him, along the way managing to father the child who will eventually be the leader.  The sequel was a huge success, and brought back Schwarzenegger is a much friendlier role to fit his kinder, gentler new image.

Which leads us to speculation about Glau.  (Speculation and potential plot spoilers on the next page.)