There are seven books in the Mammoth Slayer series, this is the fifth. In the last book, the Cro-Magnons were trying to annihilate the Neanderthal people. In this story they come to power and the last Neanderthals would have been exterminated except for a few Cro-Magnons that were sympathetic to them. This story has action, adventure, drama, heart-touching moments, and even a little humor sprinkled here and there. In addition, I believe...