Robert McCall is a former covert operations officer for the CIA who tries to atone for past sins by offering, free of charge, his services as a troubleshooter (often literally), a protector, and an investigator. People in need find him through a newspaper ad: "Got a problem? Odds against you? Call the Equalizer." Aided by a group of sometimes-mysterious contacts (some of whom date back to his spying days), McCall traverses the streets of New York City, visiting justice upon those who prey upon the weak. In this novel, based on the 1980s television show, McCall gets pulled into a battle against Russian drug lords and finds himself pitted against his most dangerous foe ever.