SEASON FINALE: Season 1 of The Exorcist ends with this series already having served up more than its share of surprises – including the revelation (stop reading here if you’re behind, and care) that Geena Davis’ lead character turns out to be the grown-up Regan from the original Exorcist movie. And now, after last week’s show, she’s been possessed again, by the same old evil spirit of Pazuzu.