From the New York Times bestselling author of The Escape Artist, an extraordinary true story of resistance, heroism and betrayal.

When the whole world is lying, someone must tell the truth.

Berlin, 1943: A group of high society anti-Nazi dissenters meet for a tea party one late summer's afternoon. They do not know that, sitting around the table, is someone poised to betray them all to the Gestapo.

They form a circle of unlikely rebels, drawn from the German elite: two countesses, a diplomat, an intelligence officer, an ambassador's widow and a pioneering head mistress. What unites every one of them is a shared loathing of the Nazis, a refusal to bow to Hitler and the courage to perform perilous acts of resistance: meeting in the shadows, rescuing Jews or plotting for a future Germany freed from the Führer's rule. Or so they believe.

How did a group of brave, principled rebels, who had successfully defied Adolf Hitler for more than a decade, come to fall into such a lethal trap?

Undone from within and pursued to near-destruction by one of the Reich's cruelest men, they showed a heroism in the face of the most vengeful regime in history that raises the question: what kind of person does it take to risk everything and stand up to tyranny?