Bell's acting skills are really good. Millennium movies can make me doubt the authenticity of the whole incident until the last moment of the movie. Nolan can pick him to play the "trilogy".
The addition of the narration of the whole movie uses the inner monologue of a mental patient to narrate the world he sees, and at the same time uses the follow-up stories to tell the real world that is difficult to distinguish between true and false. In the exploration and thinking of the protagonist's inner world.
Personally, watching this kind of movie is much more fearful than watching the follow-up horror movie...
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