The Halloween moon

"Esther Gold loves Halloween more than anything in the world. So she is determined to go trick-or-treating again this year despite the fact that her parents think she is officially too old...But when the night rolls around, something feels . . . off. No one is answering their door. The moon is an unnatural shade of orange. Strange children wander the streets, wearing creepy costumes that might not be costumes at all"--.