The Protector (Morrell, David)
The secret weapon developed by the man Cavanaugh is assigned to protect is like Kryptonite to the former Delta Force officer turned security guard--it multiplies the effects of adrenaline, a hormone associated with fear, so it incapacitates instead of energizing him. A lot of people want Daniel Prescott's secret, but Cavanaugh, who's felt the  drug's effects, wants his antidote. When Prescott disappears after causing the death of the Global Protective Services team charged with keeping him alive, Cavanaugh and his wife Jamie go after him in a high-speed chase that traps them between governmnt agents and foreign operatives each racing to find the scientist first and kill him before he can use his formula on them. Despite Prescott's double-dealing, and the bloody battle in a mountain redoubt that results in the deaths of his friends and colleagues, Cavanaugh knows the only way to banish the fear that may compromise his and Jamie's own safety is to track the elusive scientist to his last refuge. In this propulsive thriller, Morrell turns the tables so often that it's hard to separate the good guys from the bad ones, but that won't keep readers addicted to violence, treachery, and high-tech weaponry from staying with it to the last surprising chapter.--Jane Adams