THIRD BULLET: It’s not even a clue. It’s a whisper, a trace, a ghost echo, drifting down through the decades via chance connections so fragile that they would disintegrate in the puff of a breath. But it’s enough to get legendary former Marine sniper Bob Lee Swagger interested in the events of November 22, 1963, and the third bullet that so decisively ended the life of John F. Kennedy and set the stage for one of the most enduring controversies of our time.

SNIPER’S HONOR: Ludmilla “Mili” Petrova was once the most hunted woman on earth, having raised the fury of two of the most powerful leaders on either side of World War II: Joseph Stalin and Adolf Hitler. But Kathy Reilly of The Washington Post doesn’t know any of that when she encounters a brief mention of Mili in an old Russian propaganda magazine, and becomes interested in the story of a legendary, beautiful female sniper who seems to have vanished from history.

Reilly enlists former marine sniper Bob Lee Swagger to parse out the scarce details of Mili’s military service. The more Swagger learns about Mili’s last mission, the more he’s convinced her disappearance was no accident—but why would the Russian government go to such lengths to erase the existence of one of their own decorated soldiers? And why, when Swagger joins Kathy Reilly on a research trip, is someone trying to kill them before they can find out?