A tender and sharply observant debut novel about a missing young girl-winner of the Costa First Novel Award and long-listed for the Booker Prize, the Orange Prize, and The Guardian First Book Award

In the 1980s, Kate Meaney-"Top Secret" notebook and toy monkey in tow-is hard at work as a junior detective. Busy trailing "suspects" and carefully observing everything around her at the newly opened Green Oaks shopping mall, she forms an unlikely friendship with Adrian, the son of a local shopkeeper. But when this curious, independent-spirited young girl disappears, Adrian falls under suspicion and is hounded out of his home by the press.

Then, in 2003, Adrian's sister Lisa-stuck in a dead-end relationship-is working as a manager at Your Music, a discount record store. Every day she tears her hair out at the outrageous behavior of her customers and colleagues. But along with a security guard, Kurt, she becomes entranced by the little girl glimpsed on the mall's surveillance cameras. As their after-hours friendship intensifies, Lisa and Kurt investigate how these sightings might be connected to the unsettling history of Green Oaks itself. Written with warmth and wit, What Was Lost is a haunting debut from an incredible new talent.