Meg Murry, her small brother Charles Wallace, and her mother had come down to the kitchen for a midnight snack when they were upset by the arrival of a most disturbing stranger.
"Wild nights are my glory," the unearthly stranger told them. "I just got caught in a downdraft and blown off course. Let me sit down for a moment, and then I'll be on my way. Speaking of ways, by the way, there is such a thing as a tesseract."

So begins a fantastical adventure in this classic Newberry award winning story. In this special edition, you'll also find an essay by science writer Lisa Sonne describing the real-life science behind this imaginative tale. including what a tesseract is (a time wrinkle) other musing on time travel, space travel and life on other planets or other dimensions. - from Amzon