The greatest terrors aren't out there on the oceans...
They're not hiding in the shadows...
They're deep inside you... They're in your blood

Twins Connor and Grace Tempest are no strangers to adventure and mystery. Since being shipwrecked, each has discovered a new world of sea-faring friends and foes.

For Connor, these are testing times aboard notorious pirate ship, The Diablo - not least when Captain Wrathe's obnoxiuos nephew Moonshine joins the crew. And, as things reach breaking piont, Connor finds himself crossing a line from which there is no return.

Meanwhile Grace and Lorcan journey to Sanctuary, a mountain retreat presided over by vampirate guru, Mosh Zu Kamal. If anyone can heal Lorcan's blindness, it's Mosh Zu, but he's more interested in Grace. Combatting danger on all sides, Grace realises her fate in inextricably bound up with the vampirates...