There are three books so far involved in the Snuff film case.
The first book was acquired by then Vice Auror Pritchard and it was tied back to a man named Yenmor. It depicts a frightened woman standing in the image and a man dressed as a Dementor coming at her, raking her with long claws. The Dementor rapes the woman and kills her with his claws, causing her to bleed to death as you watch.
The second book was dug out of the MLE archives, shoved in behind files that were old and dusty and untouched for years. This is considered the oldest of the three books in the opinions of consulted experts. The scene that plays out in this book is the simplest. There is a man who is standing in a room, then he is magically bound against the wall. A larger man dressed up similarly to a Death Eater then enters the scene. He has a long, shining knife and proceeds to stab the man to death while he clearly begs for his life.
The third book was left on the desk of the head of the Vice division overnight anonymously. No one knows who left it, there is no record of anyone entering or exiting the department at all that night after the head left at ten p.m. This is dated as the most recent of the books. The scene starts simply enough. It's pornography, a young couple, clearly amateurs, are having unremarkable sex on a bed. Unlike the other books there is sound in this one. There is no soundtrack like a muggle film, but the couple is clearly audible, as is the squeaking of the bed and the footsteps when two people enter. The male is pulled off the female and he is held back by one man off to the side. The other man proceeds to rape the woman who is now struggling and screaming. When the rapist seemingly climaxes the man's throat is slit. The rapist climbs off the woman and holds her down so the camera can see her while the other man, who has now dropped the male with the slit throat, can come and cut her from navel to sternum. While she bleeds to death her head is held still and the man gives her what muggles know as the Black Dahlia smile.
Oddly enough in none of the books does magic seem to be used aside from the oldest of them where the man is magically bound to the wall. Magic seems to be completely disregarded as a means of achieving the maker's desired effects.