A Wrinkle in Time by Madeleine L’Engle
How many times have I read this book? Ten? Fifteen? I know only that much of the book I already knew by heart.
Meg is a classic gifted kid, brilliant in certain areas, but without a clue as to how to fit in among regular kids. Her little brother, Charles Wallace, is even more precocious. Meg and Charles meet up with three mysterious creatures, Mrs. Whatsit, Mrs. Which, and Mrs. Who, and befriend a boy as gifted as they are who has learned to get along, Calvin. Together, they go off in search of Meg and Charles’ father and, in the process, have to find a way to fight the Black Thing and IT.
This was the first book I remember wanting to read over and over again when I was a little girl.