"Coming for you, JD. All of you." That warning, spray-painted on the inside walls of safe houses filled with the bodies of ten dead operatives, drives the entire JD organization into red alert. This fourth and final novel in The Devlin Quatrology is much grittier and much less political than the first three, and is a sequel to (and spoiler for) the first three novels in the series, so the author strongly recommends that you read the series in order, starting with The Devlin Deception. WARNING: We guarantee that after reading this novel, you will never ... EVER ... again be able to look at the Mona Lisa smile in the same way.