As a serial killer plays games with the FBI, a special agent and her K-9 partner refuse to follow the rules in this Washington, D.C., thriller.

Somewhere in the Washington, D.C. area, a woman lies helpless in a box—barely breathing and buried alive. In Quantico, the FBI receives a coded message from the woman’s abductor. He wants to play a game: decipher the clues, save the girl. But when FBI cryptanalysts crack the code, Special Agent Meg Jennings and her K-9 partner, Hawk, are too late. An innocent life is lost…and the killer’s game is far from over.

With more coded messages, the deadly pattern is repeated—again and again. As the body count rises, Meg decides to break protocol and consult her brilliant sister, Cara, to decipher the kidnapper’s twisted clues. Putting her job on the line, Meg is determined not to let one more person die under her and Hawk’s watch. If the plan fails, it could bite them in the end. And if it leads to the killer, it could bury them forever . . .