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Marine architect Hannah Bryson has landed the assignment of a lifetime. The U.S. maritime museum has just acquired the former pride of the Soviet fleet, the legendary nuclear attack sub Silent Thunder, for public exhibition. It's Hannah's job to inspect every inch of the decommissioned vessel and make sure it's safe for the thousands of expected visitors. Enlisting the aid of her brother, Connor, they delve into its long and lethal history.
Then, on a routine check, Connor discovers a cryptic message behind one of the ship's panels. Before he can figure out what it means, there's a deadly assault on Silent Thunder. Now, although the U.S. government warns her against it, Hannah will stop at nothing to unravel the truth about Silent Thunder. Even if it means coming face to face with the ruthless mastermind behind the plot?and joining forces with a mysterious and seductive mercenary who is willing to kill to make sure the secrets about Silent Thunder stay silent…
Rachel Kirby is a computer genius whose personal life is falling apart. While her beloved younger sister is dying of a rare illness, Rachel is running out of time to connect the intricate pieces of a technological puzzle that will keep her alive. When a call comes from thousands of miles away, she is shocked to learn that a mysterious man named John Tavak has unearthed a stunningly important secret in an Egyptian tomb. It's a discovery that humankind has been seeking for centuries?one that may save the life of Rachel's sister and many thousands more.
But a powerful enemy is also in white-hot pursuit. Desperate to protect Tavak's find, Rachel adds her own cutting-edge expertise to his, joining forces?across three continents?to bring to light an ancient civilization's amazing legacy. As their lethal adversary draws closer, Rachel and Tavak will face murder and deceit at every turn as they race to unravel a 4,500-year-old secret…before it is lost to the ages.