Michael Atherton, who was all set to take the reigns of the business empire from his father is found dead in his bedroom. Jason Hughes, starts the investigation from the scratch. Another murder within a span of a few days and a threat pasted on the wall put the investigation back to square 1. Is there a serial killer on the loose? Is it a forgotten sin that comes to haunt after a long time? Jason Hughes needs answers. Will the shadows of that forgotten sin get buried again?