Ryan Acosta is grieving. He has recently suffered the death of the love of his life Anna and is slowly trying to navigate through the depths of his loss. His job as a graphic designer and the two small dogs his wife left behind are all he has to hold on to. He secludes himself within the walls of the home he was never able to share with his new bride. While working at home, he discovers something trapped in his walls, pestering the dogs and breaking his concentration. With the help of a new friend, he sets himself upon a course that will put to rest old ghosts and leave his past behind. What he doesn't know is that someone else mourns for Anna as well. His regret is that he killed her too quickly and longs to relive the moment. Will this person be content to remain in the shadows, leaving Ryan unaware of the rage he harbors? Or, will he circle his true prey before coming in for the final kill?