Happy Summerween!/The Convenience Store...of Horrors! 2 Books in 1 (Disney Gravity Falls)

It's Summerween in Gravity Falls, and the Summerween Trickster has paid Dipper and Mabel a visit. They have to collect five hundred pieces of candy before the last jack-o'-melon goes out---or else! Can Dipper and Mabel collect enough candy to save their souls, or will they run out of time and become the Trickster's treat? Follow along with word-for-word narration as Dipper and Mabel trick-or-treat---for their lives!