There are hundreds of resounding ideas and shrewd precepts in Adam Zamoyski’s temperate yet splendidly provocative Phantom Terror. This is the history of European ultra-reactionary repression and police espionage in the half-century after the overthrow of the French monarchy in 1789-93. The instability of popular opinion, the destructiveness of angry, ignorant populism and the wretchedness of timid, suppliant leadership are laid bare by him.