"Double, double-boil, and trouble . . . Best friends and business partners Michelle and Erica have a monstrous to-do list as they prepare for the annual West Riverdale Halloween Fair. Their shop, Chocolates and Chapters, will have a booth at the event, where Michelle will serve spooky delights while Erica displays an assortment of spine-chilling books. Thank goodness the teenagers from Erica's comic-book club are chipping in to help. But one of their volunteers winds up in trouble after a woman's body is found in an abandoned house-with the teen's superhero key ring close by. The teen swears he didn't do it, but he's obviously hiding something-leaving Michelle and Erica with a witch's cauldron of questions. Soon they discover that the dead woman was tricking a whole bunch of people out of more than just treats. Now these two friends must go door-to-door if they hope to unmask a killer . . ."