Spike (James Marsters) visits UC Sunnydale, looking for a mystical gem that will allow him to walk in the sunlight and be impervious to stakes and crosses. Meanwhile, Buffy has romance on her mind when an upperclassman (Adam Kaufman) shows an interest. Harmony: Mercedes McNab. Anya: Emma Caulfield. Buffy: Sarah Michelle Gellar. Willow: Alyson Hannigan. Xander: Nicholas Brandon.