The Silent Sisters (Charles Jenkins)

An Amazon Charts, Washington Post, and Wall Street Journal bestselling series.In this pulse-racing thriller by the New York Times bestselling author of The Last Agent, an American sleeper cell in Russia goes silent―and it's one man's duty to find them.After a harrowing escape from Russian agents on his last mission, Charles Jenkins thinks he's finally done with the spy game.

But then the final two of the seven sisters―American assets who have been deep undercover in Russia for decades―cut off all communication with their handlers.