Say Cheese is the eighth book in the Goosebumps HorrorLand sub-series. This story features a protagonist whose obsession with taking pictures leads them to discover a mysterious camera that has sinister, often deadly, effects on its subjects. The phrase "Say Cheese" becomes a terrifying command as the photos taken with the camera come to life or show future accidents. The plot combines the classic Goosebumps horror of a cursed object with the ongoing meta-story of the sinister HorrorLand theme park, where all the unfortunate victims of R.L. Stine's stories are being trapped. The hero must survive the camera's deadly power while trying to escape the terrifying park.