Deliberate mistake: Leroy Hanlon has a large scar on his left cheek, but the older version of the character, as seen in It (2017), has no scar.
Trivia: When the lynch mob enters The Black Spot looking for Hank Grogan, the masked Clint Bowers says, "Give us what we want, and we go away." This is similar to "Give me what I want, and I'll go away," the repeated demand of Andre Linoge, the main antagonist of Storm of the Century, which is another Stephen King adaptation. (00:14:47)