The third book in Margaret Atwood's sci-fi trilogy, "MaddAdam," will be published in early September, and Atwood wll be in town Oct. 1 for Talking Volumes. (Tickets available for $25 at 651-290-1200, www.startribune.com/talkingvolumes or http://fitzgerald theater.publicradio.org.)

Here's the mysterious and slightly creepy book trailer to whet your appetite. It asks such baffling questions. And what, pray tell, is a "waterless flood"?