Warbler said:
But for all I know it is offensive to Mormons. I would be against censoring it, but taking it off a 6th grade reading list? ok I guess. Still I would recommend just accepting it as a book of its time. It was written in 1887, things were acceptable back then that aren't today, for good reason.
Doyle intentionally wrote the book to be shocking and sensational. It's a lurid little potboiler, and not much of a mystery.