Pascale Hervé has reached the end of her career with the Police Nationale and retirement looms. As she faces a turning point in her life, a ghost from the past brings back the haunting memories of a thirty-year old case and a motorcycle ride across Spain and Portugal. As she revisits this case along with reminders of a long-lost friend and colleague, she must unravel a mystery that she hadn’t realised has remained unresolved all this time.