Entertainment Tonight ET Online ETOnline.com

As J.J. Jareau on CBS' Criminal Minds, A.J. Cook is constantly delving into the minds of damaged souls who've taken dark turns. But her new movie, Least Among Saints, takes a very real look inside the brain of a man with PTSD and proves the truth is often greater than fiction!

VIDEO - Criminal Minds Welcomes Make-A-Wish Patient

Joining Cook in this powerful, can't-miss drama are Laura San Giacomo, Charles S. Dutton, Taylor Kinney and writer/director/star Martin Papazian. ETonline is proud to present the world premiere trailer for Least Among Saints!

Least Among Saints opens October 12.