Cotton Malone and his fifteen-year-old son, Gary, are headed to Europe. As a favor to his former boss at the Justice Department, Malone agrees to escort a teenage fugitive back to England. But after he is greeted at gunpoint in London, both the fugitive and Gary disappear, and Malone learns that he's stumbled into a high-stakes diplomatic showdown - an international incident fueled by geopolitical gamesmanship and shocking Tudor secrets.