I loved this book so much! This is a series and I recommend that you start with the first one. I read this in 4th grade, but none of the other books had come out yet. This is a really good book if you like fantasy and mythical creatures. The first one is about a boy named Logan Wilde who just moved to Wyoming and there is a girl in his class who has the biggest secret ever. Logan finds out that Zoe and her family own a zoo with tons of mythical creatures, but six griffin cubs just went missing, and Logan has to help find them using some of his amazing tracker skills that he did not know he had. They were inherited from a family member who has even more secrets than Zoe and her family.
I recommend this book for grades: 4th-6th