In A24's Heretic, 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.

The movie also stars Sophie Thatcher and Chloe East and was written & directed by Scott Beck and Bryan Woods.

The final trailer Heretic has been released (via FearHQ.com) and it both ups the ante and drives home the fact Grant is taking on one of his most twisted, terrifying roles to date. Tormenting the two girls who enter his home, he tasks them with making a fateful decision before pursuing them through the underbelly of his house.

There's a lot which isn't shown here and something tells us this one will deliver some big twists and turns. The sneak peek also includes plenty of praise from critics, no great surprise when...