Recovering from the emotional and physical damage of his last case, Ronan McCullough is trying to put his life back together. But when a federal agent's charred remains surface, linked to a professor's encrypted money laundering scheme, Ronan becomes embroiled in a high-stakes game of life and death with someone who is willing to kill everyone that knows anything about the encryption codes.

Ronan soon uncovers several dark secrets and learns that nobody is being honest with him, including the people he trusts the most. When the encryption codes are stolen and Ronan learns their real purpose, he finds himself in a race to stop a plan that will make it nearly impossible to stop the funding of dangerous crimes.

As the body count rises and secrets are unearthed, Ronan must navigate a web of deceit to uncover the truth. How will Ronan succeed when the main suspect is a set of numbers?