1. Why would L'Engle choose to have the story take place on Thanksgiving?

2. What does the unicorn Gaudior mean in chapter 3 when he tells Charles Wallace that "There is always a moment when there is a Might-Have-Been. What we must do is find the Might-HaveBeens which led to this particular evil.

.. . It is possible that you can move into the moment of a Might-Have-Been and change it"?

3. Why was Gwynedd left in Cymru?

How does this Welsh myth relate to the current difficulties with "Mad Dog" Branzillo?

4. What is the connection between Wales and Patagonia? How is it significant to the final outcome of the story?

5. What function do the Salem witch trials serve in the novel? Why would L'Engle choose that particular historical event?

6. In what ways is Pastor Mortmain in chapter 6 similar to Beezie and Chuck's stepfather in chapter 7? Why would L'Engle make...