Under the Banner of Heaven Trailer

In this FX miniseries, a devout detective (Andrew Garfield) investigates the brutal 1984 double murder of Brenda Lafferty and her infant daughter Erica. The two suspects, brothers Ron and Dan Lafferty, were members of a splinter group of the LDS Church called the School of Prophets. Brenda had been married to Ron and Dan's younger brother, Allen Lafferty. Ron claimed that God told him to commit the murders. As seen in the Under the Banner of Heaven trailer, the miniseries also stars Sam Worthington and Daisy Edgar-Jones.