From the Youtube post:
Marcus and Tom answer open-line questions together from the audience. Tom grew up in Idaho. He was a seventh generation Mormon. As a Mormon missionary for two years, in Alabama, he began to see inconsistencies in Mormonism as well as conflicts with Scriptures. The witness of Christians sharing how Jesus Christ had changed their lives had a powerful impact on him. After becoming a Christian, he was ordained as a Baptist minister. In an attempt to study the earliest Christian writings to defend the doctrine of the Holy Trinity against the Mormon teaching to the plurality of God, Tom discovered that the early Church was Catholic. After much prayer and study, he entered the Catholic Church.