The storyline was awesome...Though it did not have too much of spooky scene to make u jump out of your seat but the storyline is so connected..and if you are a real conjuring franchise fan like me then you can easily connect each and every dot hinted in the movie with other cases shown in Conjuring universe movies till now...
Note: Sister Irene looked suspicious at the end as she saw a dark shadow when Maurice turned back to say him a silent goodbye which makes it obvious that Maurice is still possessed and this is not how maurice story will end because we saw in Conjuring 1 presentation scene that Maurice killed himself in a failed exorcism so Maurice still has that venom inside and possessed by valak.
Laurren and Ed warren will do Maurice's exorcism with Sister Irene and Father Gordon presence and that lead us to "The Nun 3" or "The Conjuring 4" plot..
The post credit scene hinted us on either a new case for Warrens in Conjuring 4 or a case of Maurice's exorcism..
So Valak is still there waiting