I wasn't really sure about this, in the end I decided to order and try, just in case I would miss a good film if I didn't. And I am so glad I did! Anthony Hopkins has this role down to a tee, and his renown sinister underlying character is present in here also.
Basic story is a young guy going into the priesthood, mainly to please his father, and he plans to join, and then leave. But he is sent to Rome, so spend time learing about and assisting exorcisms.
Quite sceptical, and not really taking most of what he sees seriously, it's only when he sees and hears some things close to heart that he realises maybe there is something true in all of this.
The last 1/3 of the film is where it really gets quite tense.
It is not 'sit on the edge of your chair' the whole time, but it does have its moments, and even more so as the film progresses.
It's well worth a watch, and if you like horror, there is enough in here to make you happy!