The End of Orson Eerie? a Branches Book (Eerie Elementary #10)

Eerie Elementary is having a haunted house for the town's Eerie Day celebration! Sam, Antonio, and Lucy are excited for the holiday...But mad scientist Orson Eerie has his own plans. Pumpkins attack and Sam gets trapped in a hayride maze! Can Sam and his friends find a way to save their school? This will be their biggest battle yet!