Sophie Thatcher is a young, talented actress, and her credits go back as far as 2015 (via IMDb). In 2016, one of her first significant roles was in the short-lived sequel series to one of the best horror films, "The Exorcist." The new iteration of "The Exorcist" premiered on Fox and lasted for two seasons. It features a woman named Angela (Geena Davis) whose family is being tortured by demons. Throughout the series, it is revealed that Angela is actually Regan, the young girl from the original horror film.
The viewers do get to see a young Regan again — though not played by Linda Blair this time. Instead, Regan is portrayed by Sophie Thatcher in two episodes of "The Exorcist" Season 1. Thatcher's Regan appears in television interviews demonstrating the immense strain she has been under. Her mother Chris (Chaon Cross/Sharon Gless) exploits her demonic possession for a book deal. Even with such a limited role, Thatcher explores the vulnerability and pain of the character. The audience can see how Regan realizes that she will never have a normal life again, and at a young age, Thatcher demonstrates great acting ability.