In the second episode of IT: Welcome to Derry, a character is revealed to be Dick Hallorann from Stephen King's novel "The Shining".
This introduction widens the scope of Stephen King crossovers, following the clue-filled opening credits and numerous IT references in the first episode.
Dick Hallorann is a character from The Shining, where he works as a chef at The Overlook Hotel and helps Danny Torrance understand his psychic gift.
Dick Hallorann helps Danny Torrance understand his psychic gift in The Shining.
Author's summary: Dick Hallorann appears in IT: Welcome to Derry episode 2.