Synopsis: Exiled to Austria, former French military commander the Marquis de Lafayette orders Charles D'Aubigny to destroy the impending dictatorship of the bloodthirsty Robespierre by assuming the identity of his corrupt new prosecutor. With the help of opposition leader François Barras and his former lover, Madelon, D'Aubigny goes in search of Robespierre's enemies list, written in a small black book that has vanished.