Jonna Mendez is a twenty-seven-year veteran of the CIA who served as a technical operations officer and chief of disguise. She lives in Maryland with her husband.
Bruce Henderson is the author or coauthor of more than twenty nonfiction books, including the #1 New York Times bestseller And the Sea Will Tell (with Vincent Bugliosi) and Down to the Sea . A former newspaper and magazine writer, Henderson has taught nonfiction writing at several major universities. He lives in Menlo Park, California.