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.
S. Cross has written a fantastic series for zombie apocalypse fans . The story is a gateway for readers not familiar with this genre. Really great tale!! From start to finish you will surely enjoy this series! ( And it all takes place in the U.K.!!!)