Very good sequel retains the high standard Blatty's original screenplay set!
In going through the original 'Exorcist' trilogy (I have the DVD 6-pack, with the two versions of the remarkable original, as well as the two recent prequels, so far unwatched), I was intrigued of seeing Oscar-winning writer William Peter Blatty's second stint behind the camera (for the record, I adored his 'The Ninth Configuration', done a decade prior), especially for the franchise that became his bread-and-butter (though I loved two films he earlier had co-wrote: 'A Shot in the Dark' and 'The Omega Man').
He once again does quite a credible job--both with the writing and in helming the picture. To me, it didn't matter much that Linda Blair wasn't involved--I like how it became a search for an already-dead serial killer--and I have been a great fan of George C. Scott in genre films since the likes of 'Dr. Strangelove' and 'The Changeling'. The scares and shocks were genuine, and the suspense and interest were there. It made me wish that even more sequels had been made, it was THAT good.