A film I won't be seeing

I didn't know a movie had been made of this book. It looks intriguing, but far too disturbing, so I won't see it. From dvdtalk.com: In the late 1890s, a series of strange deaths occurred in the small town of Black River Falls, Wisconsin. Murders were committed for no apparent reason, often by friends and loved ones. Countless infants fell victim to diphtheria, an acute bacterial infection. People were supposedly haunted by ghosts, possessed by spirits, and thrown into a profound state of depression, paranoia, and insanity. One theory is that it was so excruciatingly isolated, cold, and boring in rural Wisconsin that it drove people insane.