1944, Amersfoort concentration camp, Holland.

A scrap of folded paper weighed down Saskia's pocket. Nazi guards patrolled the streets in increasing numbers, and every time she cycled past one, she shuddered with fear. The letter she carried told a story of incredible courage. The Nazis wanted the prisoners in the camp to give up hope, but Saskia smuggled them letters from their loved ones, which gave them a reason to survive.

But with every letter Saskia delivers, she is put in even greater danger. Although she and her friend Frans are more cautious than ever, they know their lives are in danger. And one day, when Saskia is caught, she is marched into camp and forced to wear a yellow star.

A gripping story of love, betrayal and courage. Readers of Auschwitz Midwives, The Nightingale, and anything by Fiona Valpy will never forget this heartbreakingly beautiful novel and the great sacrifices Saskia and Frans made to change the fate of the world.