(4) 4-6 Illustrated by Brian Williams. Hero Will (Tunnels, Deeper) falls further--literally--into the secrets of the underground society where he was born. Meanwhile, the evil Styx plot to destroy all "Topsoilers." With educational tidbits dropped into the text, the story drags. Some interesting (if improbable) closing twists may grab series fans.

Reviewer: Claire E. Gross

(4) 4-6 Illustrated by Brian Williams. While pursuing his hobby of underground exploration, fourteen-year-old Will and his best friend are taken prisoner in the oppressive Colony, policed by the sinister, merciless Styx. The innovative underworld setting will stimulate readers' imaginations, but while adventure-lovers will appreciate the twisting plot, they may lose patience with the slow beginning and endless similes. Occasional shadowy, sketchlike illustrations accompany the text.

Reviewer: Claire E. Gross