[TV] Under the Banner of Heaven

[Malaphax]

Quote

A devout detective's faith is tested as he investigates a brutal murder seemingly connected to an esteemed Utah family's spiral into LDS fundamentalism and their distrust in the government.

https://www.imdb.com/title/tt1998372/

This is based on a book written about true crimes that occurred in the 1980's and delves very deep on the Mormon faith, both the more "mainstream" and fundamentalist sects.  The acting is solid if a bit overly-emotional at times.  They manage to nail the unsettling cult atmosphere combined with a clean facade that slowly unravels and show how this affects the detective who works the case.  They also make use of some flashback with Joseph Smith, and don't hold back calling out some of the weird shit that the early Mormons got up to, and the awful persecution they faced.  There's also some bits of pieces that reference how the faith struggles to deal with more independent women, sometimes directly calling out the equal rights / women's rights movement as a stumbling block that needs to be dealt with.  If the premise intrigues you I'd say its well worth a watch.