This documentary offers an unflinching look at the infamous attorney who prosecuted Julius and Ethel Rosenberg, and later argued persuasively for their execution in what became known as the atomic spy case. The film examines Cohn’s life as chief counsel to Senator Joseph McCarthy in the late 1950s – when the young Cohn first experimented in the process of wielding of political power – through the 1980s, when he became a darling of the Reagan White House, a rabid anti-homosexuality activist and political mentor to Donald J. Trump before meeting his death from AIDS in 1986.