Michael P. Spradlin is the New York Times bestselling author of more than thirty books for children and adults. His books include the international bestselling trilogy The Youngest Templar, the Edgar nominated Spy Goddess series and the Wrangler Award Winning Off Like the Wind: The First Ride of the Pony Express. He lives in Lapeer, Michigan. Visit his website at www.michaelspradlin.com. Spiros Karkavelas is a concept artist and photographer based in Greece. He graduated from Feng Zhu School of Design in Singapore in 2013 and has done work with various video game and book publishing companies. His realistic illustrations often have a theme of modern-day or futuristic warfare, and he draws inspiration from true war stories, the realities of the battlefield, and how war brings out both the worst and best in human nature.