The teaser for IT, May 20 -- Welcome to Derry, the much-anticipated prequel to the hit horror films IT and IT: Chapter Two, is finally out.

Set 27 years before the events of the original movies, the HBO and Warner Bros. Television series delves into the terrifying history of Derry, Maine - and the previous reign of the murderous entity known as "It."

Bill Skarsgard reprises his chilling role as Pennywise the Dancing Clown, the central figure of fear in the story. The new series also stars Taylour Paige, Jovan Adepo, Chris Chalk, James Remar, Stephen Rider, Madeleine Stowe and Rudy Mancuso.

Fans immediately took to social media to express what they feel about the teaser trailer of IT: Welcome to Derry. One user wrote, "Ahhh it looks goo...