His summer after college graduation was never supposed to turn out this way. But when Jack Duran's older, vagabond brother Dan goes missing in Mexico, Jack heads to Puerta Vallarta to find him. With two friends in tow, Jack follows Dan's trail of shady dealings, which leads him to a Bahamian yachtsman and his bikini-clad crew. Sailing down the jungle-covered coast, they soon discover that Dan had been searching for a shipwreck. But some treasures are meant to stay buried...When they finally locate the sunken ruins, they begin their furious search for the booty until, one by one, the divers begin to disappear. Could they be the victims of el Diablo Blanco, a deadly local legend come to life? Blinded by the prospect of untold riches, Jack travels toward the very brink of the abyss as he pursues his harrowing quest for...Dark Gold.