A trailer for "The Exorcist: Martyrs" was unveiled Friday at New York Comic Con, with Scarlett Johansson cast as someone tracking a demonic killer. The film is directed by Mike Flanagan and acts as both a sequel and a reboot of the long-running horror franchise.

Flanagan says the project draws heavily on "The Exorcist III" and describes it as the most unsettling project he has tackled. He told reporters the film was built to unsettle audiences and that it made him wildly uncomfortable during production.