When the older, more experienced priest (on the new 'The Exorcists' TV series) stated "There is a natural progression to possession" in Episode 2, I expected him to go into the Infestation, Oppression, and Possession mantra. Especially since his particular sub plot seems to be displaying the early signs of Infestation. But when he came up with "The demon is playing possum" I got a brain cramp. Not exactly gold standard writing.
I WILL say the gore factor with the devil worshipers' handiwork at the episode's conclusion was horrific (good, in a MA movie magic way). Mixed bag so far.