Recently (a.k.a 2 days ago) I finished the fourth book of this collection, and let me tell you...WOW. If you don't know the main story, here is the link to Wikipedia (http://en.wikipedia.org/wiki/Earth%27s_Children) but what you have to know is that is WAY more than the story of a Cro-Magnon girl 30.000 years or so ago. No, is so beautiful the way Jean Auel embellishes her attitudes, but the part I like the most is the way she describes when Ayla (the main character) has an idea…an idea that will change history. Personally, I think the books are brilliant, so I highly recommend them…the movie based on the first book, not so much. I will comment a bit on each book, but please have in mind that some spoilers might be there. I will try to spear tiny details, because the books are completely worth it.