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While best known for his role in The Shining (and later its sequel, Doctor Sleep), Dick does appear in the novel IT, but Welcome to Derry expands his role. This positions him and his shining ability as the key to uncovering – and utilizing – the powers of Pennywise, which also means seeing more of the character than we have before. And with that comes one of the most important people in his life: his grandmother, Rose, with whom he shared his ability. She’s mentioned in both The Shining book and movie, as well as Doctor Sleep, but never made it onto the screen in either Stanley Kubrick’s or Mike Flanagan’s movies, but does appear in IT: Welcome to Derry Season 1, Episode 3.
Dick Hallorann’s Grandmother In IT: Welcome to Derry Explained & Why It’s Important

Dick’s previous on-screen appearances have always made it clear there was a strong connection between him and Rose. In The Shining, he explained to Danny how they could hold conversations without ever opening their mouths. In Doctor Sleep, he references how she taught him what his abilities were and how to use them. This continues in Welcome to Derry, as he discusses his powers with Mike Hanlon, saying: “My grandma said it’s like seeing things without seeing things.”








