This book follows agent Mila Vasquez of the elite Missing Persons bureau as she investigates the mysterious return of hundreds of long-lost individuals who begin committing a horrifying pattern of murders. These “sleepers” were people who chose to disappear from their former lives, often due to terrible choices or dark circumstances. As Mila delves deeper, she uncovers clues and realizes her colleagues might be hiding something from her, which could jeopardize the entire investigation. The novel is a thriller/mystery translated from Italian.