The Boy Who Reversed Himself;

When Laura finds her homework in her locker with its writing reversed, she?s baffled, until she learns an unbelievable secret: her weird neighbor, Omar, has the ability to travel to the fourth dimension. Laura forces him to take her there?and then, a novice in ?four-space,? she goes there on her own. There?s only one problem?she doesn?t know how to get back.?A cerebral science-fiction thriller, cunningly constructed to keep the reader involved until the last pages.? ?The Horn Book