Ko is back in power -- and nothing in Droon is safe! His beasts have found a lightning-powered submarine hidden in the secret Fortress of the Treasure Queen. Now Eric and his friends have to stop Ko before he destroys Jaffa City. But first they'll need help from their worst enemy -- Lord Sparr. If he can be trusted.
- ISBN10 0606327576
- ISBN13 9780606327572
- Publish Date 1 October 2004
- Publish Status Out of Print
- Out of Print 30 June 2021
- Imprint Turtleback Books
- Edition Turtleback School & Library ed.
- Format Paperback (US Trade)
- Language English