Season one of Fox’s The Exorcist comes to its conclusion Friday night, promising to wrap the storyline centering on the Rance family’s two demonic possessions. Thanks to some clever storytelling and unexpected twists, the series became a genuine sequel to the 1973 scare-fest that had audiences fleeing theaters and nurses on hand in lobbies to assist distraught moviegoers. (Note to Millennials: That really happened!) The series gave us the obligatory possession, priests dealing with inner turmoil, surprising character revelations and the shocking death of a key character from the original source material -- and it set up the premise of “larger- scale evil” literally dominating the world. While The Exorcist failed to become the ratings juggernaut Fox had hoped for, it amassed a very dedicated fan base and was embraced by many critics. (Our own Ed Martin has included it in his list of the Top 25 Shows of 2016.) Now, with its future in limbo (Fox has yet to announce a renewal), series creator Jeremy Slater is promising a satisfying conclusion, along with more surprises, in Friday's season finale.