‘Cult of the Real Housewife’: All About Mary Cosby’s Marriage to Her Step-Grandfather

Mary Cosby attends Las Culturistas Culture Awards at The Orpheum Theatre on July 17, 2025 in Los Angeles, California.
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When a trailer leads with the line “Mary was married to her step-grandfather,” it’s safe to say that people will automatically lock in.

On January 1, TLC is set to release a three-part docuseries, The Cult of the Real Housewife, investigating the life of Real Housewives of Salt Lake City star Mary Cosby and her church, Faith Temple Pentecostal Church. Per the official release, “With claims of spiritual and financial misconduct circling Cosby and the church, The Church of the Real Housewife unpacks the allegations behind the headlines and reveals the darker and more unsettling truth.” Since the announcement, Mary has made it clear that she is not associated with the docuseries.