Buffy the Vampire Slayer

"Anya has been a key figure in Buffy's life ever since she arrived in Sunnydale, but there's more to the demon's mission and mysterious past than anyone knows! It starts with her secret connection to the Watcher's Council and--the first full appearance of the Slayer who came before Buffy? And the truth behind Anya connects Buffy(s)--yes, plural--in ways no one ever saw coming. Plus! Learn the secret truth behind the Slayer known as Faith and where she came from--it's not what you think"--Back cover.