The Dark Phoenix story chronicles the rise and fall of Jean Grey ... 1 / 7
... who's possessed and corrupted by the cosmic Phoenix Force. 2 / 7
But star Sophie Turner compares Jean's struggle to addiction. 3 / 7
'It's like a drug. So that’s why it’s so difficult for her.' 4 / 7
Turner and writer/director Simon Kinberg studied mental disorders. 5 / 7
There may be some question about whether Jessica Chastain's character ... 6 / 7
... is real or a hallucinatory manifestation of the Phoenix Force. 7 / 7