Mr. Wallace is a Dateline featured cold-case homicide detective, popular national speaker and best-selling author. He continues to consult on cold-case investigations while serving as a Senior Fellow at the Colson Center for Christian Worldview. He is also an adjunct professor of apologetics at Talbot School of Theology (Biola University) and Southern Evangelical Seminary, and a faculty member at Summit Ministries.  He is the author of “Cold Case Christianity”.