cinema was showing Raiders in the novel
from IMDB:
In the Doctor Sleep novel, Andi leaves a theater showing Raiders of the Lost Ark (1981). In the film, the theater is showing Casablanca (1942), which is Mike Flanagan's favorite movie.
I'd have preferred Raiders.. ,kind of a tip of the hat to Spielberg/RP1 (of course Raiders is Paramount and Casablanca is WBros - same as DrSleep) share