On Leah Remini: Scientology and the Aftermath, Leah Remini discussed the family members of Scientology founder, L. Ron Hubbard with biographer, Russell Miller. Miller stated that Hubbard's son Quentin was speculated to be gay. Since he was raised by a religion that taught him that homosexuality was wrong it wasn't terribly surprising that he took his own life at 22.
Miller said, "When Quentin killed himself by attaching a pipe to the exhaust of his car and running it through the window, Hubbard's reaction was one of fury. Not grief or horror that his son should do this, but of fury that it would attract attention, negative attention to what he was doing."
Hubbard had 3 wives and 7 children in total. His second wife, Sarah Hubbard claimed mental and physical abuse when she filed for divorce in 1951. Hubbard would later disown his daughter Alexis from that marriage, excluding her from his will.
Hubbard's oldest son Ron DeWolf spoke out against his father, claiming that 99% of what his father claimed were lies and that Scientology is a business. He was ultimately erased from Scientology history.
And Hubbard's third wife, Mary Sue Hubbard ended up serving a two year prison sentence for operation Snow White, an operation ordered out by Hubbard to infiltrate government offices and steal documents.
Miller said, "And it was Mary Sue that took the wrap. Hubbard, you know, made it quite clear that we wasn't going to get involved in--or any way, shape, or form as responsible for this outrageous act, and so Mary Sue went to prison."
With Mary Sue ultimately taking the fall, she was erased from Scientology history much like other family members and lived the rest of her days under intense scrutiny by the Church.
For the record, Scientology disputes the claims on Remini’s show. Their response can be read here.