Zoe Hudson's life is far from perfect, but her job diving for marine salvage keeps her busy and makes it easy to forget her failed search for her missing father. An unexpected call from her estranged mother forces Zoe to make a choice that will forever alter the course of her life.
Nicole Hudson is content to quietly finish her senior year at Columbia University. Her world is thrown into chaos when her long absent sister, Zoe, shows up out of the blue just in time to whisk Nicole away from gun-toting thugs. Soon she is off on a globe-spanning adventure, far more dangerous than anything she could have ever imagined.
As the sisters search for sanctuary and answers, they are hounded by Tricia Case, a dangerous woman who believes the Hudson women hold the key to a stolen artifact. With her reputation crumbling and her career on the line, Case stop at nothing to find what she is looking for.