A trailer for "The Exorcist: Martyrs" made its debut Friday at New York Comic Con, with Scarlett Johansson taking on a role tracking a demonic killer. The film is directed by Mike Flanagan and serves as a sequel and a fresh start of the long-running horror franchise.

Flanagan says the project draws heavily on "The Exorcist III" and describes it as the scariest thing he has ever made. He told reporters the film was built to unsettle audiences and that it made him deeply uneasy during production.