A Wrinkle in Time: (Newbery Medal Winner)

Late one night, three otherworldly creatures appear and sweep Meg Murry, her brother Charles Wallace, and their friend Calvin O’Keefe away on a mission to save Mr. Murray, who has gone missing while doing top-secret work for the government. They travel via tesseract–a wrinkle that transports one across space and time–to the planet Camazotz, where Mr. Murray is being held captive. There they discover a dark force that threatens not only Mr. Murray but the safety of the whole universe.
A Wrinkle in Time is the first book in Madeleine L’Engle’s Time Quintet.