"I just wanted to be part of it," Gellar told reporters gathered for the Television Critics Association's press tour. She said she has no idea what part she will play in her one-day guest shot.
The former "Buffy the Vampire Slayer" star was on hand to discuss her new series, "Ringers," where she plays a woman in trouble who impersonates her twin sister. "Ringers" premieres Sept. 13 on the CW.
