Spoiler alert! William and Joseph's fates
So, at what point did William become a demon? During the remainder of the night as he knelt beside the body of Annabelle? Is the second dead demon discovered by the confederate soldiers at the end the one that was chasing William, or is it the one shot dead from when William's gang first arrived at the cornfield? And what happens to Joseph after William spots him from the window shuffling past the house, obviously having managed to get out of the well ...
"Almost nobody dances sober, unless they happen to be insane."
H. P. Lovecraft