'Immersive . . . suspenseful'
Lee Child

Poland, 1944

Alfred Mendl counts down his final days within the confines of a hell on earth. His family was torn away from him on arrival; his life's work was burned before his eyes. Now his only joy comes from watching the occasional game of chess. To the guards he is unassuming, but in fact Mendl - a leading physicist - holds knowledge that only two people in the world possess. The other person is working hard for the Nazi war machine.

Four thousand miles away . . .

In Washington DC, intelligence lieutenant Nathan Blum decodes messages from occupied Poland. Having escaped the Krakow ghetto after the Nazis executed his family, Nathan thinks he has a safer future. But the US government has other ideas. They want to send Nathan back to Europe to rescue one man from a place no one can break in to - or out of.

But even if Nathan does make it in, how on earth will they make it out alive?

'A grab-you-by-the-throat thriller . . . Impossible to put down'
Jessie Keane