In IT: Welcome to Derry, Will Hanlon is attacked by Pennywise and exposed to the Deadlights near the end of episode 7, but he is not definitively killed on screen. The scene mirrors what happens to Mrs. Kersh, implying he is in Pennywise’s psychic grip and at serious risk, yet his ultimate fate is left unresolved at that point in the season.
Outside the show’s immediate events, Will is known in the wider IT canon as Mike Hanlon’s father, and other material establishes that he will survive long enough to have Mike before eventually dying years later. That broader backstory is why many commentators expect he will somehow be rescued from the Deadlights’ trance rather than die in episode 7’s aftermath.
