The Secret of the Sphinx

When adventurers Ian, Craig, and Jessica set out to discover a second artifact for the New York Historical Society, things don't go exactly as planned. The travelers' lives may depend on the choices that they make.

Ryan Christensen is 13 years old and lives in North Canton, Ohio. He enjoys writing short-stories that include action and adventure. This is a sequel to his first book, Lost Secrets of Planet Earth - The Everest Expedition, published in 2012.