Cox described it as "stranger than fiction," blending dark humor with emotional depth, exploring love, loneliness, manipulation, and people drawn into something larger than themselves.
Rebel Wilson premieres Girl Group, following a singer removed from her group's reunion tour who attempts a comeback by joining a younger teenage group.
The cast includes Jennifer Coolidge, Sheridan Smith, Melanie C, and Nicole Scherzinger.
John Madden brings Onwards and Sideways to the festival, featuring Laura Linney and Rhys Ifans as two individuals diagnosed with Parkinson's disease on the same day.
Additional premieres include the comedy thriller Everybody Wants to Fuck Me starring Taron Egerton, prison drama The Life and Deaths of Wilson Shedd starring Amanda Seyfried, and supernatural drama Faith starring James McAvoy and Erin Doherty.
The lineup also features Takashi Miike's Bad Lieutenant: Tokyo starring Lily James, coming-of-age drama The Julia Set starring Chase Infiniti, Wayne Wang's Diary of a Mad Old Man, and Trudie Styler's Up Against It starring Antonio Banderas.
Previously announced titles include Love of Your Life starring Margaret Qualley, Patrick Schwarzenegger, and Aaron Pierre; a feature adaptation of Prima Facie starring Cynthia Erivo; revenge thriller Your Mother Your Mother Your Mother starring Mahershala Ali; and Sian Heder's Being Heumann.
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The festival aims to build on recent commercial success, after horror film Obsession premiered last year and became the highest-grossing festival acquisition in history, earning $442 million worldwide.
