Hannah's got a funny feeling that it's up to her to save the entire world, but before she can do so, she and her skeptical best friend Mia have to figure out what they're saving the world from! As the girls' detective work proceeds, they uncover a chain of clues that might unravel the children's mystery of the vandalized town playground, but what about the massive space cruiser parked high in the stratosphere, and the aliens inside who are laying plans to invade Earth? Can a pair of middle-school detectives really save the world? Find out in this funny book for tweens!

A.M. Luzzader, author of middle grade fiction books, including the Mermaid in Middle Grade series, debuts a new middle school mystery novel, Hannah Saves the World (Book 1: Middle Grade Mystery Fiction), to add to her collection of middle school literature and fun books for tweens.

This book is perfect for kids who love science fiction, kid detective books, tween books for girls or boys, and children's mystery adventure books.

A.M. Luzzader describes Hannah Saves the World (Book 1: Middle Grade Mystery Fiction) as "a middle school mystery novel, a kid's detective book, and a kid's humor book. It's a great book for girls or boys, and I think even adults would enjoy it!"

Educational topics: Friendship for kids, vocabulary, spelling, logic, deduction, honesty, self esteem, humor, personality, individuality, and writing devices such as palindromes, alliteration, consonance, and dissonance.

For kids ages 8, 9, 10, 11 and 12 and all who love mystery books for kids and funny books for children.

Grades: 3rd, 4th, 5th and 6th