Ig Perrish is accused of the murder of his girlfriend, Merrin Williams. After a hard night of drinking, Ig awakens, hungover, to find horns growing out of his head; they have the ability to drive people to confess sins and give in to selfish impulses. Ig decides to use this effective tool to discover the circumstances of his girlfriend's death and to seek revenge by finding the true murderer.
Based on the dark fantasy novel by Joe Hill