A Swiftly Tilting Planet
By Cindy Kane,
Common Sense Media Reviewer
Common Sense Media Reviewers
A teenager saves the world from destruction.

A Lot or a Little?
What you will—and won't—find in this book.
Where to Read
Community Reviews
Based on 2 parent reviews
Themes are more mature than first 2 books in series
Report this review
Entertaining and thought provoking but a little intense for some kids
Report this review
What's the Story?
On Thanksgiving Day, recently married Meg Murry O'Keefe is visiting her family when her father receives a call from the president. A power-hungry South American dictator called "Mad Dog" Branzillo is threatening nuclear war. The news prompts Meg's strange mother-in-law, who shares Branzillo's ancestry, to recite an ancient family rune that causes strange weather disturbances.
It's up to Meg's fifteen-year-old brother, Charles Wallace, to use the rune as he journeys through time, searching for the "Might Have Beens" that led to this crisis. With a unicorn named Gaudior as his guide, Charles Wallace travels in and out of five of Branzillo's ancestors, from prehistoric time tothe 1860s, encountering tensions between two feuding brothers in each generation.
Helped by Meg, who wordlessly links her thoughts with his through kything, Charles Wallace changes the pattern of history and saves the world from destruction.
Is It Any Good?
The saga is well crafted with some scenes that are truly exciting, such as the rescue of a woman in Puritan times from being hanged for witchcraft. The plot does demand close attention, though. For instance, every generation Charles Wallace visits has a blue-eyed descendant of the Native American woman Zyll, and one 12-year-old reader couldn't keep all the variations on her name (Zylle, Zillah, Zillie) straight.
L'Engle offers plenty of clues about the interlocking generations, which are fun to piece together. In fact, some characters arrive very late at conclusions the reader will have reached early on. ("Duh!" said the 12-year-old at one point, heaping scorn on Mrs. Murry's two Ph.D.s.) Criticism aside, patient readers will be rewarded with a well-sustained story line and a spine-tingling ending.
Talk to Your Kids About ...
Families can talk about how this story connects to other books in the Chronos Quartet series. Which of these characters have appeared in the author's other books? In what ways have they changed or grown since we first met them? Families can also discuss the broader concept of "Might-Have-Beens." Is there any might-have-been moment in your own life that you'd like to go back and change?
Book Details
- Author: Madeleine L'Engle
- Genre: Mystery
- Book type: Fiction
- Publisher: Yearling Books
- Publication date: January 1, 1978
- Publisher's recommended age(s): 9 - 12
- Number of pages: 240
- Last updated: July 12, 2017
Did we miss something on diversity?
Research shows a connection between kids' healthy self-esteem and positive portrayals in media. That's why we've added a new "Diverse Representations" section to our reviews that will be rolling out on an ongoing basis. You can help us help kids by suggesting a diversity update.
Suggest an Update
Where to Read
Common Sense Media's unbiased ratings are created by expert reviewers and aren't influenced by the product's creators or by any of our funders, affiliates, or partners.
See how we rate