In part 1 of "Vampires Suck," Gwen dines on the grey matter of a person who knew her as a child – and things quickly get complicated… Meanwhile, ghost-girl Ellie learns a few tricks from Amon the mummy, Spot the were-terrier goes to the comic shop and meets someone from Gwen's past, the mad scientist Galatea engages in a bit of grave-robbing, and the monster-hunters tackle the town's vampire problem once and for all.