Gappy and the Witch's Curse (Book Six of the Young Vampire Adventures)

The end of the school year should be a fun time, but for 11-year-old Gappy, it is absolutely horrible. First, he must fight for his life against a crazed janitor, and then his classmates and teachers turn mean. Gappy hopes things will be better at vampire summer camp, but dark forces are at work, and an Old Order vampire is after him again. A strange feeling soon forces Gappy to make a difficult decision. Something is calling him to Salem, Massachusetts, site of the terrifying witch trials of 1692. Should he remain at Camp Widdershins where he is safe, or should he leave to face an unknown danger? Gappy and his best friend Pru follow a series of clues and make a shocking discovery. Suddenly, they find themselves in a race against time. Will they succeed, or are they already too late?