Fantasy books series, a sequence of books identified together as a group, have grown in popularity over the past few years. In 2008 many of the best seller lists included fantasy books that were part of a series and fantasy books box sets are commonly produced by publishers. This article focuses on two fantasy book authors whose book series saw record sales.

This book is the second in the Southern Vampire Mystery book series upon which HBO's popular True Blood series is based.

Patricia Briggs, an award winning author of several urban and epic fantasy novels, has written another installment in the best selling Mercy series.