“A smashing Cold War thriller for the twenty-first century.” —People magazine

Recruited in the 1930s, the members of the Cambridge spy ring were the most notorious Soviet spies in history. But what if there were a sixth member of the ring whose identity was never revealed?

“A lively thriller…astute…inventive…a notable addition to the accounts of the Cambridge spies.” —The New York Times Book Review

Sam Gaddis is a divorced academic in need of money. A journalist friend tells him that she’s uncovered the century’s most extraordinary spy scandal. Within hours, she’s dead. Soon Gaddis is in the crosshairs of a very real, very dangerous plot. Risking everything he has and everyone he loves, Gaddis follows leads that take him all over Europe and beyond, unraveling the layers of Cold War secrets surrounding the notorious sixth man. And, with MI6 trying to throw him off the trail, Gaddis approaches a shocking revelation that threatens the peace and security of modern Europe.

“Cumming is a wonderful storyteller who…makes it all feel fresh. The Cold War is over but in The Trinity Six, it’s hotter than ever!” —USA Today