All of the Gabriel Allon books are well written and show the amount of research Silva undertakes for his books.
This book started out okay but quickly went downhill. The main character‘s decisions and actions made no sense. Events jumped around with little logic and there were about a million holes in the story. Like, how does a 16-year-old disinherited Japanese woman just wander around Europe for 7 years in the 1960s with no visible means of financial support? That‘s just one example. The ending was ridiculous and didn‘t fit with anything else in the book.