The new thriller in the Amazon #1 rated series.John Milton has started to hope that he might have a future. He has a job driving a taxi around the streets of San Francisco. He has his anonymity and his solitude. Being invisible has become a comfortable habit. He doesn't want to be found.But when a girl he drives to a party goes missing, Milton is worried. Especially when two dead bodies are discovered and the police start treating him as their prime...