There are 4 books in the Monster Hunters Unlimited series.
The Monster Hunters Unlimited series does not have a new book coming out soon. The latest book, Flying Fiends and Gruesome Creatures (Book 4), was published in August 2015.
The first book in the Monster Hunters Unlimited series, The Undead and Water Beasts, was published in August 2014.
The Monster Hunters Unlimited series primarily falls into the General Fiction genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.