J. Warner Wallace of Cold Case Christianity was a cold case homicide detective. (Some of his cold cases were featured on Dateline.) As an atheist he decided to use his professional skill set to investigate the Gospels.
He became a follower of Christ due to the evidence and wrote the book Cold Case Christianity and started the ministry with the same name.
His testimony was so unique it was featured in God’s Not Dead 2. Love that scene. And yes I did include it in the videos above!