Jerald Tanner (1938-2006) was the founder of the Utah Lighthouse Ministry in Salt Lake City, Utah.

Jerald Tanner was born June 1, 1938 to George and Helen Tanner. He married Sandra McGee in 1959. He started the Modern Microfilm Company, which he closed in 1983 and then opened the Utah Lighthouse Ministry to publish his and his wife's work. He served on the board of the Rescue Mission of Salt Lake and as an Elder on the Governing Board for Discovery Christian Community.

Sandra Tanner (born 1941) is a researcher.

Sandra Tanner was born January 14, 1941 in Salt Lake City, Utah. She married Jerald Tanner in June 1959. Together they started the Utah Lighthouse Ministry (originally founded as Modern Microfilm Co.). Sandra and Jerald Tanner are known for their research and criticisms of the Church of Jesus Christ of Latter-day Saints.

Ed Decker (born 1935) is a writer and evangelist in Utah.

Edward John Decker was born in 1935 and raised Episcopalian. While attending Utah State University, he married a member of the Church of Jesus Christ of Latter-day Saints named Phyllis in 1956. He joined the Church in the following year. Afer 20 years, Decker became an evangelical Christian and asked for his name to be removed from church records. He was divorced in 1969. He was excommunicated on October 21, 1976 in Bellevue, Washington. Shortly after excommunication, Decker founded Ex-Mormons for Jesus, a non-profit organization with the purpose of "witness[ing] Jesus Christ to the Mormon people." Due to criticism that the corporation was only a negative attack on the Church, Decker changed the name to Saints Alive in Jesus to promote the positive aspect of the ministry. Decker is the author of many controversial books and articles to do with the Church of Jesus Christ of Latter-day Saints, and is well known for his film "The God Makers".

Walter Martin (1928-1989) was a Baptist minister and author.

Walter Ralston Martin was born 10 September 1928 in Brooklyn, New York to George Washington Martin and Maud Ainsworth. He married Elaine Lois Jacobsen and together they had one child. In 1951 he was ordained a Baptist minister and started to preach to various congregations. He spoke and published about cults and in 1955 founded the Division of Cult Apologetics. Walter R. Martin published various books with the aim to teach Protestants to live their Christian faith more fully. Some of these works include: The Jehovah of the Watchtower, The Christian Science Myth, The Christian and the Cults and the Rise of the Cults. He traveled and spoke at various conferences, published articles, visited congregations, taught bible classes gave international tours and appeared on radio shows. He died at his home on June 26, 1989 at the age of 60.