With the cities starving and his girlfriend critically wounded, CIA Operations Officer Dylan Kane is in a race against time to save not only the country he has sworn to protect, but the only woman he has ever loved. And in the end, he may be forced to choose between the two.

Three top secret research scientists are presumed dead in a boating accident, but the kidnapping of their families the same day raises questions the FBI and local police can't answer, leaving them waiting for a ransom demand that will never come. Central Intelligence Agency analyst Chris Leroux stumbles upon the story, and finds a phone conversation that was never supposed to happen. When he reports it to his boss, the national clandestine services chief, he is uncharacteristically reprimanded for conducting an unauthorized investigation and told to leave it to the FBI.

When a woman arrives at Sir Marcus de Rancourt's new home, claiming to be a cousin of his late brother-in-law, he and his fellow Templars are forced to fight off her pursuers before knowing the truth of her crime—accusations of adultery by her husband. Swearing she is innocent, Sir Marcus and his trusted sergeant agree to seek out the truth, while his squires remain behind to protect her. But soon after arriving in Paris, they discover that nothing is as it seems, and more is going on than they could have possibly imagined.

New Orleans has been quarantined, an unknown virus sweeping the city, killing 100 percent of those infected. The Center for Disease Control, desperate to find a cure, is approached by BioDyne Pharma who reveal a former employee has turned a cutting-edge medical treatment capable of targeting specific genetic sequences into a weapon, and released it.

Father Mercier is on a mission to save the souls of the possessed in the Kingdom of France, but he makes a mistake when he pries a young woman from the arms of her loving family in the sleepy village of Crécy-la-Chapelle. For this is the home of Templar Knight Sir Marcus de Rancourt and his men, and the young woman is a friend. Once word is received of her abduction, Sir Marcus and his men spring into action to not only try and save their friend, but uncover the shocking secret behind what motivates this unholy exorcist and his loyal followers.