London, September 1940. Deep in the Underground, hidden from the bombs, four teenagers meet.

Fourteen-year-old Ella walks with a limp. Some days she feels like a laughing stock, and some days she feels invisible. Quinn is fifteen. She’s run away from home with a bag full of jewellery and big plans to change the world. Sixteen-year-old Jack has lost everything, so nothing matters to him anymore. Sebastian is Quinn's big brother, but his betrayal means he no longer exists to her. Then the tunnel comes.

A coming-of-age historical novel for teens from internationally bestselling children's author, Anna Woltz.