The Last Possession starts fairly strong with a good atmosphere set up in the opening but after the opening scenes the movie slows down a huge amount and doesn't really pick up again until the last half hour, until a lot of people are turning light switches on and off and watching some very contrived emotional scenes between the father and his kids. The older sibling Jack (Sawyer Bell) comes across as quite brattish and unlikeable and I, unfortunately, found myself not really caring what happened to him in the story. The father Kent, portrayed by Stephen Brodie, is also, unfortunately, not a character that is easy to warm to as he just appears to be an insufferable know-it-all. The youngest child Grabby ( Lourelle Jensen) and Grandma Inez ( Patricia Rae) are what saved this movie. I liked the fact that Grandma Inez somewhat bucks the ideas of the stereotypical character type of someone who is brought in to deal with a possession.
This film has a lot of good things going for it, there are a few good jump scares, some nice atmosphere being created via the weather, some quintessential horror tropes and they did a pretty good job with the entity and some of the research and theories to do with the paranormal that are mentioned, but it takes a long time to really get going and it also seems like they tried to stuff too many ideas into the script and so the ending is a little weird compared to the rest of the film.