Dr. Tim LaHaye is president of Tim LaHaye Ministries and founder of the Pre-Trib Research Center. He has written more than sixty nonfiction books, and his writing are best noted for their easy-to-understand and scripturally based principles that assist in facing and handling the challenges of life. His Left Behind series, written with Jerry Jenkins, is the fastest-selling Christian fiction series ever, with more than seventy million copies sold. Dr. LaHaye earned a doctor of ministry from Western Theological Seminary and a doctor of literature from Liberty University. He and his wife, Beverly, live in Southern California.

Puzzle master Timothy E. Parker is Senior Crossword Puzzle Editor of USA Today Crosswords and the "World's Most Syndicated Puzzle Compiler," according to Guinness World Records. Parker is the founder of Bible Brilliant and constructs crosswords, word searches, anagrams, cryptograms, mazes, column raises, slide-n-solves, the Japanese games Sudoku and Kakuro, hangman, and a mass array of trivia and original games. His is married with two children and lives in Maryland.