There's a professional killer gunning for Britain's Prime Minister, and it’s up to MI5 Director Spencer Hall and a top CIA agent, Jack Stein to stop him. They go way back, so when Stein tells Hall there's a plot against the Prime Minister, he knows it's legit—and isn’t the least bit surprised to learn the KGB's behind it. The killer may be a current or ex-British agent, meaning Hall and Stein must put together their own close-knit team to crack the case.