***SPOILER ALERT***
"That's too much a vulgar display of power", says the unnamed demon (Pazuzu) inhabiting the body of 12-year-old Regan MacNeil when quizzed by would-be exorcist Father Karras about his puzzlingly limited worldly abilities. Why not simply kill everyone in the room? Or in the city? Or swallow the sun? The Archfiend's answer --that one line-- singlehandedly closes any loopholes an astute audience member might find when examining the plot, and, more broadly, the concept of demonic possession. It…

1973