The movie "IT" from 2017 scared the crap out of me!  Did you see the film?
No i have not but i can tell you the screenplay is by Chase palmer, Gary Dauberman, and Cary Fukunaga. Have you ever heard of these professionals?
I have not.  What else are they known for?
The locations for "It" included the municipality of Port Hope, Oshawa, Ontario, and Riverdale, Toronto.
"It" premiered in Los Angeles on September 5, 2017, and was released in the United States on September 8, 2017, in 2D and IMAX. The film set numerous box office records and has grossed over $700 million worldwide. Unadjusted for inflation, it is the highest-grossing R-rated horror film of all-time, the highest-grossing horror film internationally and the highest
Seth Green (Richie), Ben Heller (Stan), Marlon Taylor (Mike), Emily Perkins (Beverly), Jonathan Brandis (Bill), Adam Faraizl (Eddie), and Jarred Blancard (Henry). The miniseries was directed by Tommy Lee Wallace and scripted by Wallace.
The first of a two-part feature film adaptation, "It", was released on September 8, 2017. It is directed by Andy Muschietti, with a screenplay by Chase Palmer, Cary Fukunaga and Gary Dauberman.