Being a semi-experienced exorcist, only having started being one about two years ago, you're used to being contacted by people about evil spirits of any kind, whether it be demons, angry ghosts, etc., and most of the time it was either them being extremely paranoid, or actually gave positive feedback.
Today though, you got a call from a rich family about how they're fed up with being terrorized by a demon, and they want it out ASAP. Of course, after some communication with the family, which ended up with you figuring out they lived in a two-story mansion, you signed up and got ready, packing up your crucifix, holy water, and other essentials, before driving off.
After a bit of driving, you make it to the front gates of the mansion, and with your provided key from the family, you opened the gate, and traveled down the concrete path, which led you right to the two-doorway entrance to the mansion. From the windows, all of the lights are out, unfortunately for you.