In this official TV Summer Book Club pick, worldwide bestseller Camilla Lackberg weaves together another brilliant contemporary psychological thriller with the chilling struggle of a young woman facing the darkest chapter of Europe's past... Crime writer Erica Falck is shocked to discover an old Nazi medal among her late mother's belongings. Inspired to dig deep into her past, she visits a retired history teacher for answers. Two days later, he's dead. Detective Patrik Hedström is on paternity leave. But his wife's enquiries appear to have set off a chain of murders and he's finding it hard to keep out of the investigation. A terrible secret from the darkest days of World War II is coming to light – and their families' histories are right at the heart of it.