As he was loaded into the squad car, he stated, “There can be only one.”
If that a reference to the film The Exorcist?
Because in my post that you replied to I mentioned the possibility of an exorcism of some sort as a potential motive for the bizarre killings.
FATHER KARRAS: I think it would be helpful if I gave you some background on the different personalities Regan has manifested. So far, there seems to be three. She’s convinced...
FATHER MERRIN [abruptly interrupting]: There’s only one.