Watch: 'Under The Banner Of Heaven' trailer starring Andrew Garfield and Daisy Edgar-Jones.

FX have shared a trailer for 'Under The Banner Of Heaven', starring Andrew Garfield and Daisy Edgar-Jones, which is based on Jon Krakauer's true crime bestseller which follows the events that led to the 1984 murder of Brenda Wright Lafferty and her baby daughter in a suburb in the Salt Lake Valley, Utah.

"As Detective Jeb Pyre investigates events that transpired within the Lafferty family, he uncovers buried truths about the origins of the LDS religion and the violent consequences of unyielding faith. What Pyre, a devout Mormon, unearths leads him to question his own faith."

Watch the trailer below...