Say Cheese - And Die Screaming (Goosebumps Horrorland, Bk. 8)

Someone - or something - is inviting ordinary kids to HorrorLand and trapping them there. But they're not the only guests of the terrifying theme park where nightmares come to life. Slappy the Dummy, Monster Blood, and other vile villains have joined the terror trip, too. And now an eerie camera is predicting trouble: Somebody might be gone in a flash!