Mark Mittelberg is a bestselling author, international speaker, and Executive Director of The Lee Strobel Center for Evangelism and Applied Apologetics at Colorado Christian University. Mark is the primary author of the celebrated Becoming a Contagious Christian training course (with Lee Strobel). This course has been translated into more than twenty languages and has helped nearly two million people share Christ in natural ways. He also co-authored the Becoming a Contagious Christian book, followed by his leadership-oriented Becoming a Contagious Church which presents an innovative blueprint for church-based evangelism. Mark was the original evangelism director at Willow Creek Community Church in Chicago. He led in that role for seven years, and then served as Executive Vice President of the Willow Creek Association. He was also an editorial consultant and periodic guest for Lee Strobel’s television show, Faith Under Fire. He and Strobel have been ministry partners for more than thirty years. After receiving an undergraduate degree in business, Mark earned an MA in Philosophy of Religion, graduating magna cum laude from Trinity International University in Deerfield, Illinois. He also received an honorary Doctor of Divinity degree from Southern Evangelical Seminary in Charlotte, North Carolina. Mark and Heidi live near Denver, Colorado, and are the parents of Emma Jean and Matthew, both of whom serve in full time ministry roles.