Unknown Threat

by Lynn H. Blackburn · 2021

When three US Secret Service agents die under baffling circumstances, the agency’s toughest protector, Special Agent Luke Powell, finds himself the next target. Desperate and haunted by loss, Luke is forced to join forces with FBI Special Agent Faith Malone, a driven investigator tasked with cracking the unprecedented string of attacks. As the body count rises, trust is scarce and the enemy remains hidden, but together they must untangle a web of intrigue before Luke’s name is added to the Secret Service’s Wall of Honor. "Unknown Threat" delivers a pulse‑pounding race against time, blending high‑stakes political intrigue with relentless action as two elite operatives learn that the greatest danger lies in the shadows they thought they understood.