Sandy Silverthorne has been writing and illustrating books since 1988 and has over 500,000 copies in print. His award-winning Great Bible Adventure children's series sold more than 180,000 copies and has been distributed worldwide in eight languages. He's worked with Focus on the Family, Universal Studios, and the Charlotte Hornets. Connect with him at sandysilverthornebooks.com John Warner has been fascinated by detectives and mysteries ever since he was old enough to read. He holds a degree in business administration and operates his own video production business. He and his wife, Kristin, and their three children live in Oregon.