FILTRING WITH THE DARK SIDE III

yesterday i bought a movie close to my home , i did not know what one to choose , but i knew it has to be an horror film , so i bought one called " the antichrist exorcism " i thought i would liked but the true is that it was not so good enough , it was about a girl who was desperate for having a normal live , her parents teach her in her house, she could not go to a normal school and she was never able to go out because she had to take care her youngest brother , she had an uncle who was a priest but he had problems with the church because an exorcism that went wrong , the stupid girl asked to his uncle how the other girl got the possession and he uncle told her that the other girl draw a specific pentagram with her own blood and like that called the demon , so one day when she was really peace off , she did the pentagram and she get possession , but the uncle want this , want her to do this so he can prove the existence of the devil . all her family were destroy for this event , some of them die , other were killed or suicide , all of this just for proving that the devil exist. i would not prove his existence never!!