When conservative law professor Alex Johnson is found dead from an apparent self-inflicted gunshot wound at his house in Chicago, everyone thinks it is suicide. Everyone except his brother, Royce, an FBI agent. Without jurisdiction or leads, Agent Johnson leaves his cases and family to find out who killed his brother. There are many suspects: the ex-wife, an ambitious doctor with expensive tastes and reasons to hate her ex; academic rivals on a faculty divided along political lines; an African-American student who failed the professor’s course. As Agent Johnson peels back layers of mystery in his rogue investigation, the brother he never really knew emerges. Ultimately, he must face the question of how far he is willing to go to catch Alex's killer.