Mark Mittelberg is a best-selling author, international speaker, and the executive director of The Lee Strobel Center for Evangelism and Applied Apologetics at Colorado Christian University. He is the author of several books including The Reason Why Faith Makes Sense, Becoming a Contagious Christian, Confident Faith and his latest book, Contagious Faith. Mark was the original evangelism director at Willow Creek Community Church in Chicago. He was also an editorial consultant and periodic guest for Lee Strobel’s television show, Faith Under Fire. Mark and his wife, Heidi, live near Denver, Colorado, and are the parents of Emma Jean and Matthew.