Danger in the Jeweled City

The adventure with the mariner's clock continues... In the first book the two siblings discover a mysterious portal, which allows them to travel back and forth in time. ___________ Matt and Heather once again step through the portal. This time their passage lands them in San Francisco at the 1915 Panama Pacific International Exposition where they stumble into an international conspiracy. Their discoveries result in a mad chase through "The Jeweled City." In addition to this, they discover that something even more dire is threatening their very existence. So not only must they save themselves, but they have to prevent an international disaster - all within a four hour time limit, as the mariner's clock ticks down... ___________ Danger in the Jeweled City is the second in a series of Matt & Heather adventures, which began with The Mariner's Secret. ___________ Mary Tomasi-Dubois held a secret clearance while she worked for a covert government program during the cold war. Her interest in ancient history, metaphysics, and quantum physics has inspired her to weave tales incorporating these topics into her plots.