A lawyer in Victorian London tries to understand the nature of the strange relationship between his physician friend and the cruel and violent man he seems to protect. Illustrated sidebar notes provide historical background to the text.

Having upset the balance between the warring statues of London, twelve-year-old George is confronted with new challenges as he tries to free his captured friends Edie and The Gunner from the formidable Walker and deal with the three strange veins of marble, bronze, and stone that have begun to grow out of his hand.

As Will Burrows continues to search for his lost archaeologist father in the strange underground world he has discovered, he stumbles across a sinister plot with terrible implications for the world above.

"Miss Penelope Lumley embarks on an investigation into the mysteries surrounding the Incorrigible children, Lord Ashton, the forests of Ashton Place, and her own past"--

Will Burrows believes he is safe at the very center of the earth, in a world that no one knows exists, but the Styx are close behind and will follow him anywhere, while on the surface, Drake and some unlikely allies unearth some critical secrets.

When chance brings Edward Tudor and Tom Canty together, they decide for fun to switch clothes and places. Exchanging their roles as heir to the throne of England and as a pauper's son, they learn how the other half really lives.