The Vault Mass market paperbound - 2012

Tyler Locke's routine commute on a Washington State ferry is interrupted by a chilling anonymous call claiming that his father has been kidnapped and that a truck bomb is set to detonate on board in twenty minutes. When Tyler reaches the bomb, he's stunned to find classical languages expert Stacy Benedict waiting for him. She's received the same threat--and her sister has also been taken. In order to disarm the bomb, they must work together to solve an engineering puzzle that is written in ancient Greek. But preventing the explosion is only the first step. The entire setup is a test created by a ruthless criminal: uncover the lost riches of King Midas.

Tyler and Stacey have just five days to track down the gold. Armed with an ancient manuscript penned by brilliant Greek inventor Archimedes, they begin a quest to unravel a 2,000-year-old mystery whose answer is hidden within the workings of a cryptic artifact: the Antikythera mechanism, a device designed by Archimedes himself.

To save their loved ones and prevent their captors from recovering a treasure that will finance unspeakable devastation, Tyler and Stacy head to Italy, Germany, Greece, and finally the streets of New York City in a race against the clock to find the truth behind the story of King Midas.