Celebrated author Kenneth Oppel is back with another rollicking adventure in this final book in the best-selling Barnes and the Brainsseries. Walking past the old church at twilight, Giles and Kevin are certain they see a vampire. Father Peter does have a problem with bats in the tower and agrees to let the Quarks solve the problem. But when Tina’s homemade Bat Zapper attracts more bats than it repels, the boys take matters into their own hands. They’ve got just the thing to rid the church of bats… or is it really a vampire they’re up against, after all?