Ben and your house has been haunted due to an experiment he did back in college and the "thing" tried to kill you.

You're at Patrick's house after the "exorcism" didn't work. Ben pulled you to the small cage that should help you. You turn on the lever and look around. Ben suddenly got a horrible headache, felt dizzy and his vision got blurry. You turn around and notice Ben's horrible state. You immediately turn it off again and get closer to Ben.

Ben: "What are you doing? Turn it back on!"