Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
Son (10): This is a great book, lots of action, and introduces new characters. It's a whole new story. It introduces the Roman camp. Thanatos (the death God) is chained up and they have to release him, or monsters won't die. They have to defeat a giant and they don't where it is. There is a big battle. Michael (8): There are a lot of questions that the characters must answer. Daniel (6): I like when Frank Zhang discovers his family gift. Characters: Percy Jackson, Hazel Levesque, Frank Zhang