Instinct: A Jack Sigler Thriller

When the President of the United States falls victim to a weaponized and contagious strain of a genetic disease—one that kills its victims without warning or symptom—Special Forces commander Jack "King" Sigler is on the case. He and his team of highly trained operators have been assigned to protect a CDC detective as she journeys to the source of the new strain: Vietnam's Annamite Mountains.

Surrounded by old landmines, harsh jungle terrain, and more than one military force not happy ab…