My name is Charlotte Locke, and I'm an analyst for Section 47, a secret government agency that tracks terrorists, criminals, and other paramortal bad guys who want to unleash their abilities on an unsuspecting mortal world. I have a magical form of synesthesia that senses danger and uncovers lies--making me a stealthy operative. I'm trudging through another day when one of Section's cleaners--assassins--takes an interest in me. I don't need my synesthesia to realize that he is extremely dangerous and that he will do anything to achieve his goals--even if it means putting me in the lines of fire.