The president of the United States is dead—assassinated by a weaponized strain of the Brugada Syndrome, a genetic disease that kills without symptom. Without warning. The infected fall over dead, their healthy hearts stopped. Thankfully, the fast actions of the Secret Service revive the President. But the assassination attempt was just the beginning. The contagious new strain spreads silently across the United States. Within weeks, the human race will be on the brink of extinction. The coming pandemic thrusts Jack Sigler, call sign King, and his “Chess Team”—Queen, Rook, Bishop and Knight—into a frantic search for the disease’s origin, and hopefully, a vaccine. Accompanying them are Sara Fogg, a CDC disease detective and Somi Syha, an undercover CIA field agent in the remote region the team must infiltrate—Vietnam’s Annamite mountain range.