If there are heirs, lives may be endangered. These words echo in the mind of Harry Bosch as he takes out a notebook from the inner pocket of his jacket.
The eccentric magnate from Southern California, sitting at his desk, reveals that many years ago he fell in love with an underage Mexican girl. When she became pregnant, she disappeared forever. Throughout his life, he wondered if he had brought their child into the world... Bosch is the only person he can trust and the only one who can play dangerously...
The tough detective begins his investigation. A suicide and the crash of a helicopter with five passengers in the Vietnam War unravel the thread of this strange story.
At the same time, four rapes of women during fertile days are a case that cannot be left in the hands of the local police.
After thirty years of service, Harry Bosch knows that people are capable of murder for any reason or no reason at all.