A brand-new Goosebumps arc narrated by the most iconic and evil character of the series, Slappy!
 

Luke Harrison's dad makes horror movies. It's very fun to be around such scary stuff-especially when you have your own monster museum at home. But when two ventriloquist dummies join the collection, things get real creepy. Real-life creepy! Slappy and Snappy can walk and talk on their own. And they can make you scream on their own. They have a plan to make everyone's lives miserable. Will Luke be able to stop this terrible twin twosome?

This is the first Goosebumps series to focus on one specific character.
 

To no surprise, this series features the most sequels to the Living Dummy saga at seven books currently, as well as the most sequels to a single saga in a single series.

more⁺ : https://goosebumps.fandom.com/wiki/Goosebumps_SlappyWorld