Johnny Worricker dresses well, collects art and adores jazz. He invariably appears calm, cool and collected — but he’s always working. He’s been an MI5 agent since long before the close of the Cold War, and has learned to keep his observa­tional skills perpetually operational. He’s been through numerous prime ministers and nearly as many wives. Through it all, he’s believed in the job, a career Johnny’s supe­rior and oldest friend calls “dishonourable work you could do in an honourable way.” But a top-secret document containing unsavoury revelations about torture and compromises made by Britain’s leader — along with an untimely death — will push Johnny’s professional abilities, as well as his integrity, to their limits.