No one knows his real name. No one knows where he lives. Trained by Delta Force, calm in moments of absolute terror, Cavanaugh stops threats before they strike-silently, swiftly, and lethally. His latest assignment: protect a brilliant scientist with a secret so extraordinary he needs to disappear and adopt a new identity. For Cavanaugh, helping Daniel Prescott is just another job. Until it explodes, Prescott vanishes, and the protector finds himself in a fast, furious battle for his life.