Museum curator Amara Grant has big plans. Open a museum in Haiti plans. Return local artifacts to their country of origin plans. Getting fired from the prestigious museum she works at? Not part of the plan. But that’s exactly what happens when she discovers that a priceless set of bracelets on display are actually fake.

When a bombing rocks New York City, former Marine Hunter Stevens and his team at Southerly—a new NSA surveillance program listening to Americans through their smart devices—race to track down those responsible. But when Hunter's daughter vanishes without a trace during the investigation, he makes a desperate choice to exploit the system’s vast surveillance network to find her. The decision sets off a chain reaction—exposing corruption, betrayal, and a deeper conspiracy within Southerly itself.

My husband Matt and I are an ordinary married couple in every way but one. At the end of each day, we return to our own homes and our own spaces. But beyond the fairy lights I string at my window, darkness is pressing in. Two local women have gone missing, and I don't want to be alone. Sipping our coffees, looking out of my kitchen window, I soon notice how observant Brenda is. When she tells me that perhaps my husband isn't simply working late, something cold takes root.

In 2010, Brooke Lowry, Carrie Hollis, and Eve Shay were inseparable. But on the Fourth of July, Eve vanished—her case never solved. Brooke moved away, but Carrie couldn’t let go, her obsession driving her to become the Chief of Police. Now, fifteen years later, just as Carrie is about to close Eve’s case for good, an anonymous call provides a chilling new lead. And–within days–a man’s body is hauled in by a fishing boat. His murder is linked to a hotel a few miles away–where the guest in the room next door was none other than Brooke Lowry.

FBI agent Sarah Cole is stunned to receive an invitation to the “Game of Nines,” the most secretive and longest-running murder puzzle in history. Thrust into a mystery that has confounded law enforcement for decades, she proves to be an unexpectedly formidable "player"—and might finally end the deadly game once and for all.