LeGrand Richards completely misses it as is evidenced by his misunderstanding of the phrase "familiar spirit". What spirit is he talking about? The Holy Bible never gives the slightest indication that it means anything sentimental or nostalgic, or something fondly remembered. The phrase always refers to evil spirits. Richards takes a passage from Isaiah and attempts to show that it predicts the coming of the book of mormon. He then paraphrases it in his own words. Perhaps he did slip up and mean something totally different than the biblical definition. If so, its an interesting slip.
The point is, if I want truth it would not be wise for me to go to a man and read his books. God alone is Truth and His word is where I will find it. The Holy Bible tells us ghosts are not the spirit of the dead who return while awaiting the Judgment. Rather it says the dead know nothing and therefore cannot communicate with us. If God says not to communicate with the dead, not to even attempt it, then we had better obey. DON'T DO IT! Otherwise you open the door to demonic activity and God's anger.
Joseph Smith himself admitted when one of his revelations later proved false that sometimes it can come from satan. "(I Joseph) enquired of the Lord about it, and behold, the following revelation came through the stone: Some revelations are of God: some revelations are of man: and some revelations are of the devil." He was unable to discern whether his so-called revelations had come from God, his own imagination or the devil, One should be extremely cautious.