A paranormal investigator researches unexplained phenomena with the intention of debunking them. Her latest case is a small town overwhelmed by a series of plagues of biblical proportions, including locust swarms and the river running red as blood. The investigator is convinced there is a rational explanation, but comes to realise she faces a genuine supernatural threat. Thriller, starring Hilary Swank and David Morrissey.

Katherine Morrissey, a former Christian missionary, lost her faith after the tragic deaths of her family. Now she applies her expertise to debunking religious phenomena. When a series of biblical plagues overrun a small town, Katherine arrives to prove that a supernatural force is not behind the occurrences, but soon finds that science cannot explain what is happening. Instead, she must regain her faith to combat the evil that waits in a Louisiana swamp.