With last summer's adventure in the Ultimate Tree House now a fading memory, Amanda is finding it hard to adjust to Middle School. New faces, new teachers, stuck in a different class than her friends - and if that wasn't bad enough, now she is a "little kid" again. How much more of this could she take? Meanwhile, Ben is on top of the world and enjoying school with his friends. His sister is in a different school and finally out of his hair - life was great All of this changes when a surprise announcement brings the Project Kids back together in a two-school competition to build the best Halloween display. Armed with Vampires, Goblins, Zombies, Ghosts and the lessons they learned on their previous adventure, it seems like there is no way they can lose This book builds on the Project Management concepts learned in The Ultimate Tree House Project, with a few more key lessons to help them handle more complex projects. Forced to handle constant changes, near-disasters and an immovable deadline, it is going to take their very best to get their project completed on time. Join the Project Kids as they embark on their bravest adventure yet - to build the Scariest Haunted House - Ever. The kids get started on the project and soon learn that it is not just Haunted Houses that can be scary This book is designed for children ages 8-12