This past May, Jewish men, most of whom were foreign, between the ages of eighteen and forty had been called up to present themselves to the Paris police. All had received a green postcard, and so the wave of arrests of five thousand men that followed was called billet vert. Almost all had been Polish refugees. Even if French Jews had been included, Julien and Victor had been too young, and Professor Lévi, at forty-six, was too old. Still, Madame Lévi worried more than ever. She instructed both of her sons that they were not to leave the property. Both boys nodded and didn’t argue, but the boys knew they would disobey her. They could not sit still and let the world pass them by. Victor often went out his window at night, leaping down to the garden, to meet with his friends. Julien planned to show Lea Paris, no matter what he had promised his mother.

On the day Julien took her to see the city, his hair was slicked back and he wore a pressed white shirt. Lea hadn’t seen any more of the city than she had during her initial walk from the train station. The neighborhood was a maze of tiny streets and alleyways, a maze Julien knew so well, he could be blindfolded and still find his way. He backtracked through the small cobbled streets that took them to a bridge that crossed to the Île Saint-Louis. They waited until the bridge was empty, then dashed across and quickly took the flight of steps to the river so they could walk along the Seine in the wilting, green heat. There was such a hush it was as though they’d entered a dream. They went on in a trance, as Julien described the places where they walked as they’d been before the war, the crowds on summer days, the ice cream shops, the boats on the river, the fishermen underneath the bridges who caught salmon, carp, and eel.

Lea didn’t know where to begin when he questioned her about herself. What could she say, that she’d witnessed a murder, that there was still blood on her shoes even though Ava had cleaned them so well, that her mother had sent her away and her grandmother was trapped in their apartment with no means of escape, that she kept a secret close to her heart that she could never divulge?

The best she could do was shrug off his interest. It was probably a bad idea to become attached to someone when she had no idea how long she would stay. “I like to keep my thoughts to myself,” she told him.

She gave him a keen glance that made him uncomfortable. Suddenly, he felt awkward, and somewhat in her power. Without his shield of charm, he was vulnerable and easily wounded.

“Maybe you’ll share them with me,” he said.