Mike Flanagan's new Carrie show ends with prom. Because of course it does. Ending Carrie in any other way would be sacrilegious. However, the Prime Video series makes plenty of changes to the source material, and these lead to one particularly ambiguous moment right at the height of the iconic prom scene. In a Zoom interview, Polygon asked Flanagan to clarify exactly what's happening in that sequence, and his answer reveals a fascinating idea at the heart of the entire show.