This is clearly a no budget film, but it is a lot better than many movies of this type. It has a spooky story and told it well. A few of the other reviews talk about bad acting, but I found the actresses (as they were almost without exception all female) to be very natural and believable. Emma Pearson was very good as a young child, and Ariella Mossey was great as her babysitter, who is thrown into a number of weird and troubling situations. Rivers Duggan seems off as Liz, but that's appropriate because the character is supposed to be disturbed by everything that has happened and unable to fully deal with life. Everyone else does quite well also. The biggest disappointment is that the entire film turns out, by design, to just be a bridge between the films that came before and the one that comes after. I've not seen any of the other films, so I don't have a larger perspective and am just judging by its own merits. The ultimate villain of the movie is slightly unusual, or maybe is just not explained as well as needed without the other three films to add extra information. At one point it gets a little preachy with a religious statement, but that actually seems appropriate to the characters involved and is not too heavy-handed. That does open the door slightly to criticism that the plot was culturally insulting, but, again, without seeing the other three movies in the series I can't tell is there's a real problem. Based upon the surprising acting chops of the youngest stars and a plot that is both sort of familiar but not overdone, this film overall earns a good but not great rating.
