Original: In Terminator: The Sarah Connor Chronicles, a series that debuted January 13, 2008, Glau played the role of Cameron Phillips, a Terminator infiltration unit sent back to protect John Connor and Sarah Connor from Skynet.
Simplified: In February 2007 it was announced that Glau would be playing a role of Cameron Phillips in The Sarah Connor Chronicles, a spin-off of the Terminator series of movies. This character is a Terminator infiltration unit sent back to protect John Connor and Sarah Connor from Skynet.