As I know this story is real and read the whole story myself on internet.
I can say that the movie is good the location the camera performance all are looking good sound could be a little louder and scary so the people who r watching it in cinema halls get the goosebumps.
when I watched the movie somtimes I got a very scary feelings all the actors did good job non of them are looking over the syllabus. the darkness a horror movie need is present in this film.
I can say that if you are a big fan of horror then just go and watch the whole.movie without thinking about any negative thoughts about the movie.