In the mid-1970s, there were a series of gangland murders, committed by unknown killers, often wielding .22-caliber revolvers. At first these murders seemed unconnected, but law enforcement started noticing links to organized crime and by 1978, federal authorities were involved in the investigations. The FBI compiled a list of 25 gangland figures killed, from potential witnesses and low-level associates, to made men. All shot with a .22 between 1975 and 1978, all from the same batch of guns purchased in Florida, some even the same weapon.

The main suspects were members of the East Harlem Purple Gang. Starting on the fringes they quickly became a violent offshoot syndicate of the Mafia, some even became high-ranking members of the Genovese, Bonanno, and Lucchese families. Often serving as freelance hitmen, kidnappers, and drug traffickers, their exploits quickly crossed into mythology. The Purple Gang became an almost obsession with the media. Accounts of the Gang's activities popped up in the newspapers across the country in the late 1970s. They were the shadow army of the underworld and every law enforcement agency's favorite suspect. They were accused of being behind all the major mob hits through the early 1980s and became the ultimate boogeyman in the era of mob upheaval and a flailing New York City mired in crime and financial woes.

Digging through the mystery and mythos, Scott Deitche brings the gritty City of the late 1970s and early 1980s back to life in this in-depth account of the Purple Gang, the real members, their operations, and where some of the major players are today.