In the recently released season 4 trailer, a mystery girl appeared at the end with white hair and starring up at the moon. While her characters exact origins are still a mystery, the actress playing her is not. Scarlett Byrne is the actress who will be taking on the role of said mystery girl. According to TNT and deadline, the former Harry Potter star will play a “mysterious young woman with special powers and an unusual connection to the alien invaders.” According to BWH Agency, which represents Scarlett revealed on twitter today that that she would be playing Lexi, Tom and Anne’s daughter. What does that mean for Lexi?
— The BWH Agency (@TheBWHAgency) October 30, 2013
Many new mysteries are promised for season 4 and Mrs. Byrne is one of several roles that have been cast and revealed in recent months including a few more below. Be sure to re-watch the trailer and checkout the other casting news for season 4.