Angel is haunted by the spirits of people he's killed, and the Scooby Gang suspect an ancient evil is involved. * Absurdly Spacious Sewer: Fourteen million square miles of them, and that's not including a lot of natural cave formations and a gateway to Hell. * Accidental Innuendo (In-Universe): Joyce is putting up the Christmas decorations; Buffy is thinking about her Erotic Dream. * Actor Allusion: The maid Margaret is played by Cornelia Hayes O'Herlihy, who played Princess Margaret in Gods and Monsters. * Always a Bigger Fish * Blatant Lies: Faith turns down Buffy's offer of Christmas dinner, claiming she's already been invited to a big party. * Call Back: Joyce claiming that Giles didn't want to share Christmas with them is undoubtedly due to the embarrassing e