I thought that this show would be the same old Catholic exorcism stuff. It is not. It brings in both spiritual faith and science. It really is a detective drama where you have to figure out is it supernatural or plain medical science or misused technology. It is very interesting as the story leads you down different paths. It also shows you how people can be manipulated especially when they have low self-esteem, mental health issues or emotional issues...even by a therapist.
Yes, there are a few predictable and cheesy parts, but overall it has a good and interesting storyline and the actors are very good in their roles.