Summer Glau's not only beating the robotic stuffing out of herself in our television badass smackdown poll, she's also joining the cast of Joss Whedon's "your mind is the scene of the sex crime" show Dollhouse.

She'll be playing Bennett, an employee at the Dollhouse who shares a mysterious past with Echo. And there are more details about the reason the character played by Michael Hogan (Saul Tigh from BSG) comes to the Dollhouse to stop — his psychotic family member is on a killing spree, and Hogan needs the Dollhouse's help to stop it. Also, Alexis Denisof (Angel) will be playing a U.S. Senator who's on a witch hunt against the Dollhouse. And Keith Carradine's business executive character is Adelle DeWitt's nemesis. It all sounds like a rich stew of nastiness. [THR]