The Forbidden Door Jane Hawk #4 by Dean Koontz

Still on the run, Jane Hawk is an FBI agent on the run from a nation-wide conspiracy that uses mind-controlling drugs to force their enemies to either kill themselves or become mindless zombies bent to the will of the cabal. In book four, the enemy is becoming desperate as Jane has been climbing the ladder to the most powerful in the cult. Now they threaten her 5-yr-old son and Jane won’t stand for it.

As with all the books in this fast-paced story, Jane Hawk is a power to be reckoned with. Hang on and be prepared to call in sick tomorrow. You won’t be getting any sleep any time soon.