Mary Cosby has been acting "out of character" recently, the other cast members say — and this week, in a bombshell, viewers find out why.

I n episode 11 of season 5 of The Real Housewives of Salt Lake City, Mary sets the stage for a dramatic confrontation when she cuts right to the chase and questions Meredith, "Why

Mary Cosby and her son shared an emotional scene on the latest episode of Bravo's 'RHOSLC' opening up about substance abuse.

Bravo stars show support for Mary Cosby and her son after the tearful scene on The Real Housewives of Salt Lake City about his addiction.

The Real Housewives of Salt Lake City offered an intimate moment between Mary Cosby and her son, Robert Jr., as he came clean about his substance abuse and mental health struggles. “I’m taking Xanax,” Robert Jr.

After the emotional episode on Wednesday night, Heather Gay and Meredith Marks joined Bravo executive Andy Cohen for a special WWHL broadcast in Miami, where they talked about Robert Jr.’s challenges and the candid,

I just feel very disappointed with myself," Mary said after learning her son had been using substances since he was 16

Mary Cosby just delivered one of the most raw, honest, and heartbreaking scenes in Real Housewives history. At the end of tonight’s episode of The Real Housewives of Salt Lake City, Cosby finally sits down with her son Robert Jr.