After semi-retired construction manager Harry O'Keefe buys a house in Mississippi from Army veteran and cybersecurity expert Cal Singer, he's in for a nasty shock before he can move into his new house. Before moving out, Cal holes himself up in the place and engages in a dangerous shootout with the Madison County Sherriff's Department. What sent him over the edge? As Harry investigates Cal's past, he discovers a hidden life and a conspiracy...