The site Zap2it has a nice spoiler for us about a returning character in the episode 6.19:
The “Supernatural” news keeps pouring in as the series builds toward another explosive season finale. Zap2it has learned that “Buffy the Vampire Slayer” star Amber Benson is set to make her return for episode 619, tentatively titled “Mommy Dearest.”
Benson is currently on location in Vancouver for the episode, which is scheduled to air on April 29. She has filmed scenes with Jim Beaver (Bobby). “Finished day 1 of episode 19, working with Amber Benson,” Beaver says in a Facebook update. “She’s a real sweetheart.”
Benson played “good” vampire Lenore in Season 2′s “Bloodlust,” where we first met one of our favorite villains, Gordon. Lenore was the head of a group of vampires who were attempting to live peacefully among humans. They fed on cattle blood and tried to blend in to keep hunters like Gordon and the Winchesters off their backs.
Lenore proved that she could resist the temptation of human blood when Gordon tempted her by slicing Sam’s arm open. Though Dean initially hesitated to set her free, Sam convinced him to let her and the rest of the non-murderous vamps go.
We’re speculating, based on the episode title, that her return is connected to the Mother of All, who, like any over-involved mom, has been driving monsters extra-crazy for the last year and a half. Can Lenore keep her urges under control even with the Mother of All whispering creepy recruitment plans in her ears?
Finished day 1 of episode 19, working with Amber Benson. She’s a real sweetheart. My Cecily (*major* Buffy fan) would have been so excited that I’m working with “Tara Maclay.”