"Hidden Child" is an exciting detective novel written by the famous Swedish writer Camillo Lackberg. This book is the seventh part in a series of crime thrillers about detective Patrik Hedström and journalist Erika Falk. In this book, the main characters investigate a crime that happened in the distant past, a former secret passion, a mysterious photographic archive, and family secrets that force them to rethink their past and risk their future. "Hidden Child" is a tense and emotional thriller that keeps the reader in suspense from the first page to the last. This book fascinates not only with the mystery of the crime, but also with the inner world of the characters, their doubts, fears and decisions.