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From New York Times bestselling author Tess Gerritsen comes a chilling follow-up to The Spy Coast, plunging the Martini Club into the search for a missing teen—with a startling connection to their own pasts.

When former spy Maggie Bird retired to the seaside hamlet of Purity, Maine, she settled in for a quiet life with breathtaking views. But enemies from her past soon threatened to destroy everything.

Maggie survived, thanks to her wits and the collective intelligence of the Martini Club, the circle of ex-CIA friends in her cocktail-sipping book club. Their handiwork, however, caught the attention of young police chief Jo Thibodeau. Now Jo and her neighborhood ex-spies have an uneasy alliance.

After a teenager vanishes—and Maggie’s neighbor becomes the prime suspect—she joins the investigation, determined to prove her friend’s innocence. But the girl’s wealthy family pushes for an arrest. And when authorities discover a long-dead corpse in a nearby pond, the case becomes doubly complicated, with unthinkable ties to long-buried secrets.

As Jo grapples with two unexplained mysteries, the Martini Club races to uncover the truth behind shadowy secrets…before more lives are lost.