The secrecy surrounding Sadie Sink's character in Spider-Man: Brand New Day demonstrates the pitfalls of Marvel's spoiler culture.

Sadie Sink‘s mysterious role in Spider-Man: Brand New Day has finally been revealed.

An alleged five-second clip of Sadie Sink has reignited speculation over her mystery role in Spider-Man: Brand New Day. While Marvel has remained tight-lipped, fans are convinced they've spotted clues pointing to Jean Grey, with several other theories also doing the rounds online.