The second book in the hidden series, magnificent fantasy-adventure from the bestselling author of the keepers. Sharkey is a sunker; he was born on a fortunate tide, and everyone on the giant submersible 'rampart' knows ...The second book in the hidden series, magnificent fantasy-adventure from the bestselling author of the keepers. Sharkey is a sunker; he was born on a fortunate tide, and everyone on the giant submersible 'rampart' knows it. He's a hero, a future admiral, beloved by the ancestors.