The Boxes (by William Sleator)

In this modern Pandora story, Annie's mysterious Uncle Marco has left two boxes in her care, with specific instructions not to open them, put them near each other, or tell anyone about them. Soon, of course, she is driven by curiosity to open one, releasing an insectlike creature the size of a guinea pig, which multiplies rapidly, communicates telepathically, builds incessantly, worships the time-controlling device in the other box, and wants Anne to be its "nervous system."

As the creatures build a mysterious structure in the basement, unscrupulous developers discover Anne's secret and will stop at nothing to possess a device which can slow down time. But neither they nor Anne have understood how the device really works.

William Sleator has long been a sort of cult favorite among the 10 to 14 set, writing edgy chillers with surprising endings, such as Interstellar Pig and Singularity. This book, based on the Greek myth of Pandora, is one of his milder stories but is still exciting and creepy enough to keep most upper-elementary kids on the edges of their seats.

Experienced readers will appreciate the author's talent at keeping things unpredictable. In fact, one group of 10 year olds, usually adept at anticipating the twists and turns of stories, came nowhere close in their efforts to predict where this was going and were thrilled when the author finally telegraphed the next step. With rapid pacing and an ending that demands a sequel, this should keep middle-schoolers turning the pages.

Author: William Sleator
Publisher: Dutton Children's Books
Publication date: May 15, 2005
Number of pages: 196
Hardcover price: $15.99
Read Aloud: 9
Read Alone: 10