Mark Mittelberg is the best-selling author of The Questions Christians Hope No One Will Ask (with answers) and The Reason Why Faith Makes Sense. He is also the primary creator of the celebrated Becoming a Contagious Christian curriculum, which has been translated into more than 20 languages and used to train 1.5 million people around the world. Mark was on the leadership team at the Willow Creek Association in Chicago for many years, and now co-directs (with Lee Strobel) The Institute at Cherry Hills in Denver, Colorado.