The Invisible Enemy

Struck down but never out. Vertigo, headaches, nausea ... all debilitating, all stemming from a sudden and unexplained attack in a foreign hotel room following a meeting with a Russian asset. CIA operations officer Jack Dunn has seen everything in his line of work, but he's never experienced something like this before. Two years later, he's retired, divorced, and still struggling with the effects of what happened in that room. When he hears of a similar attack on a White House staffer, Jack knows it's more than an isolated incident. And this time, he's not letting it go. CIA leadership has warned him to stand down. His ex-wife and fellow officer won't be easy to convince. But Jack's decorated career as a federal agent has earned him loyal contacts, even if the agency itself is a bust. He gave his life to his country. To a government that left him out to dry. But Jack Dunn isn't finished fighting for it--or himself--just yet.