Jean Simpson has been astounding skeptics and believers alike for decades with her on-target numerology system. She is the author of Hot Numbers, Hot Lotto Numbers, and Jean Simpson's Numbers Diet and has been interviewed by Oprah and Regis Philbin, and has appeared on CBS Morning News, CNN, and 48 Hours, among hundreds of other television and radio shows. Author home: Thousand Oaks, California.

Dennis Cohen is the author, coauthor, or contributing author of more than 30 books and the editor of more than 400 technology titles. He is a former mathematics teacher and software developer who created proprietary numerology software for use with some of Jean's books. Author home: Spokane, Washington.