Very good

Rating: Null/10 (12 September 2017)

This is the screen version of a Stephen King novel. Usually, the movie versions turn out badly. However, this film is a huge success.
The screenplay is different from the novel which tells the story of the children in their first (in 1989) and second confrontation (as adults) with the monster.
Instead, the movie ends after the defeat of the monster in 1989. Allowing for a happy ending. The novel's plot complexity is lost. But, the simplification turns the tale into a simple battle between innocence and an ancient evil.
The young actors are excellent. Sophia Lillis is enchanting. Credit goes to the director and writers for making the villain creditable and fearsome.
Bottom line is that the movie succeeds as a horror film.