William Dietrich is the author of fourteen novels, including six previous Ethan Gage titles--Napoleon's Pyramids, The Rosetta Key, The Dakota Cipher, The Barbary Pirates, The Emerald Storm, and The Barbed Crown. Dietrich is also a Pulitzer Prize-winning journalist, historian, and naturalist. A winner of the PNBA Award for Nonfiction, he lives in Washington State.