Mister Zenith was the world's greatest hero, until he was brutally murdered in the dead of night. Who killed him? Enter Rick Murphy, FBI agent and accomplished criminologist. But how effective can he be when he's opposed by an entire police department full of bigoted superheroes? Enter Ivan Orion, world famous multibillionaire inventor. Who is he really, and what part does he play? As the players assemble, the killer's identity becomes clear, but the question deepens: why?