The British actress - who appeared on Torchwood as Suzie Costello; and on and Bones as Cate Pritchard - will take on the role of new team leader Ilsa.
When Fox initially sent out its casting notice for this character, it described her as follows:
Sophisticated, driven and principled. She is a widow with a vast fortune that she uses to help better the world. Ilsa finds Chance’s lethal methods and his past deeds unacceptable, but she will learn to appreciate (slowly) the altruistic benefits that he has to offer. Ilsa is witty, sexy, clearly in charge and doesn’t take any nonsense from anyone. Chance has met his match.
Human Target will return with new episodes at 8 p.m. on September 24.