A Wrinkle in Time is a young adult science fantasy novel written by American author Madeleine L'Engle.
The back of the book says it's for 10+ but my child is a great reader and would have done just fine at age 8, plus you can always read it to them instead. The only hard part is the quotes from Shakespeare and KJV Bible. PROS: This book draws you in really well although it does take some time to get to the action.