How about this for a premise:
I think that this is a show that only Sarah Michelle Gellar can pull off. She's compelling enough to make it work. You have to give her credit for taking a role that is going to put her through her paces as an actress and make her stretch and grow. She could have taken, literally, anything and made things easy on herself. Gellar said no to that, and now we'll see what happens with Ringer (note that the article, dated roughly to mid-May, called the show The Ringer. The ad leaves out the 'the').