Do you belive in AMITYVILLE horror ?

i do have the court case of amityville. all of it, fotos in there, and everything that was said in court after he killed his family.. Its suppose to be based on true story, now maybe the court case was since a lot of that was coming from the mans head, he heard voices telling him what to do.. No one around so he believed it was god.. I think maybe there was much truth in the original.. think the crimes did happen and he did believe he heard voices, but the rest, hmm i say fictional lol to make some of it up to make a film of it since the family was killed