Analyze the Cinematic Techniques Used in the "Exorcism of Emily Rose"

The Exorcism of Emily Rose (2005), directed by Scott Derrickson, has elements of a number of genres, however chiefly it could be classed as a Horror/Mystery/Thriller. The main tagline is 'What happened to Emily?', suggesting that the viewer will be making up his/her own mind in relation to the events portrayed in the movie.
The movie stars Laura Linney, as defence lawyer Erin Bruner, an agnostic who represents Father Moore (Tom Wilkinson). Emily Rose (Jennifer Carpenter) is deeply religious, as is her family.…