Welcome to Derry will take the audience back into the world of Andy Muschiettis movies but years before those events, and thanks to that, it will bring one of the novels most horrifying scenes to life. After a miniseries adaptation in 1990, Stephen Kings It finally got a big-screen adaptation in 2017 and 2019, directed by Andy Muschietti. The success of Muschiettis It duology has led to its expansion with a prequel TV show titled Welcome to Derry, produced by Andy and Barbara Muschietti.