Prince Dakkar and his mentor Count Oginski discover a plot by arch-enemy Cryptos to kill Napoleon.
Arriving on their revolutionary submersible to intercept Cryptos, they glimpse a terrifying monster that seems to escape back into the bowels of the Earth.
It leads them to discover an amazing underground world, and a plan more nefarious than they could ever have believed - even from Cryptos.
The stage is set for an epic showdown complete with a giant reptilian cavalry and the Battle of Waterloo, in another breathlessly paced and endlessly inventive adventure for fans of Percy Jackson.
- Format: Paperback
- Pages: 272 pages
- Publisher: Bloomsbury Publishing PLC
- Publication Date: 05/06/2014
- Category: Adventure
- ISBN: 9781408826324