From the #1 New York Times bestselling author of Vince Flynn

Bright, young, and ambitious, Quinn Barry desperately wants to be an FBI agent, even as she programs databases in the basement of the J. Edgar Hoover Building. But Quinn's career -- and her life -- are about to change wildly. Testing a new program, Quinn's computer savvy turns up a mysterious DNA link among five gruesome murders. A link that the old FBI system had been carefully programmed to miss. A link that nearly costs Quinn her job, and soon, her life...Pitted against a conspiracy of unimaginable proportions, Quinn will match wits against powerful government forces that will use any means necessary to keep their dirty secrets hidden -- secrets that will land her in the clutches of a sadistic, brilliant madman who holds the key to it all.