THE GREAT BARRIER REEF, 2051.Treasure lies in the deep.So does danger.Elite divers Matt and John are hunting the legendary Mayan Star, a priceless jewel lost beneath the Reef-until Matt's reckless mistake leaves John catastrophically injured.The only treatment that could save his best friend is impossibly expensive. To pay for it, Matt must return to the waters where everything went wrong and find the treasure he oncepursued for fortune.His only ally is Natalie, John's brilliant and fiercely driven sister-who wants nothing to do with the man she blames for her brother's condition. Forced to work together, their distrust begins to give way to something neither expected.But someone else is hunting the Mayan Star.Someone ruthless.And in the lawless depths of the Reef, Matt and Natalie are about to discover that finding the treasure may be the easy part.A treasure so rare, even the devil will care.