Mr. Reed is horrifying because these kinds of people exist out there. Granted, it might not be to this extent, where they built an entire house dedicated to what they believe in and staged things to control people, but there are some people out there who are so set in their ideals and beliefs that it permanently alters who they are.

After making its world premiere at the Toronto International Film Festival, "Heretic" is ready to be seen by the masses. In this horrifying thriller, veteran actor Hugh Grant plays a seemingly nice older man who welcomes two Mormon missionaries into his home.

The official logline for Heretic reads, “Two young missionaries are forced to prove their faith when they knock on the wrong door and are greeted by a diabolical Mr. Reed (Hugh Grant), becoming ensnared in his deadly game of cat-and-mouse.”