When Arthur Woods took command of the NYPD in April of 1914, the institution was still largely the corrupt, low-tech organization of the Tammany Hall era. To the extent the police were stopping crime--as opposed to committing it--their role had been almost entirely defined by physical force: the brawn of the cop on the beat keeping criminals at bay with nightsticks and fists. The solving of crimes was largely outside their purview.

Woods was determined to change that, but he couldn't have anticipated the maelstrom of violence that would test his science-based approach to policing. Within weeks of his tenure, New York City was engulfed in the most concentrated terrorism campaign in the nation's history: a five-year period of relentless bombings, many of them perpetrated by the anarchist movement led by the legendary radicals Alexander Berkman and Emma Goldman.

Steven Johnson's engrossing account of the struggle between the anarchist movement and the emerging surveillance state stretches around the world and back to the nineteenth century--to Alfred Nobel's invention of dynamite, to the development of forensic science in France, and to the assassination of Czar Alexander II, an event that propelled Berkman and Goldman's emigration from Russia to America and inspired their conviction that the nation state must be destroyed. As the forces of anarchy and policing clash in New York City, we meet Inspector Joseph Faurot, a science-first detective who works closely with Woods in reforming the police force; Hans Schmidt, the psychotic killer priest whose capture turns Faurot into a household name; and Amadeo Polignani, the young Italian undercover detective who infiltrates the notorious Bresci Circle.

Johnson reveals a mostly forgotten period of political conviction, scientific discovery, assassination plots, bombings, undercover operations, and innovative sleuthing. The Infernal Machine is the complex pre-history of our current moment, when decentralized anarchist networks have once again taken to the streets to protest law enforcement abuses, right-wing militia groups have attacked government buildings, and surveillance is almost ubiquitous.