1980: Will and Julie Purcell, the children of feuding parents Tom and Lucy Purcell, go missing a week after Halloween in West Finger, Ark. 2015: Retired detective Wayne Hays (Mahershala Ali), who originally investigated the crime, is asked to look back on the twists of the unsolved case with a true-crime documentary producer.
Must be redeemed in iTunes only. HBO: Does not port.
