"Charlotte Sauvin has always seen the world differently. At home on 33 Place Brugmann, in the heart of Brussels, her father and her closest friends and neighbours - the Raphaels from the fourth floor, and Masha from the fifth - have ensured her secret is safe. But when the Nazis invade Belgium, and Masha and the Raphaels disappear, Charlotte must navigate her new world alone. Over the border and across the sea, in occupied Paris and battered Blitz London, Masha and the Raphaels are reinventing themselves - as refugees, nurses, soldiers, heroes. Though scattered far and wide, they dream of only one place, one home: 33 Place Brugmann. But back at Place Brugmann, Charlotte feels impending danger closing in. Who can she trust in this world - where everyone is watching, and everyone is harbouring their own secrets? As the months pass, and the shadow of war darkens, Charlotte and her neighbours must face what - and who - truly matters to them most - and summon the courage to fight for more than just survival."--Provided by publisher.