Frederick Fitzell (Dylan O'Brien, THE MAZE RUNNER) is living his best life—until he starts having horrific visions of Cindy (Maika Monroe, IT FOLLOWS), a girl who vanished in high school. He reaches out to old friends with whom he used to take a mystery drug called Mercury, but realizes the only solution lies deep within his own memories. So Frederick goes on a terrifying mental odyssey to learn the truth. This mind-bending thriller also stars Hannah Gross (JOKER) and Emory Cohen (BROOKLYN).