Maybe this will help the weak ratings: Sarah Michelle Gellar will reunite with one of her Buffy the Vampire Slayer co-stars on Ringer.
Amber Benson will guest-star in Episode 10 of the freshman series, TVGuide.com has learned exclusively. Benson, who portrayed Willow's girlfriend Tara Maclay on Buffy, will play Mary Curtis, a stripper who is also an informant for Agent Machado (Nestor Carbonell).
Buffy the Vampire Slayer: Then and now
Last seen taking a bullet aimed for Buffy in Season 6, Benson has gone on to appear in several TV series, including Grey's Anatomy, Private Practice and Supernatural.
Ringer airs Tuesdays at 9/8c on the CW.