my opinion

  I learned a lot of knowledge by reading this book. Like how to fing some information form other people's talking. Like Richard listened  to the man who died in his apartment, and find a lot of information to against the German spies. Richard is a brave man, when he was just one person, he aslo find someway to defend the spies group. This quality is also should be learned. We should be clam when we met dangerous things. for example, Richard once go to the general headquarters of spies but he use his intelligence and his clam to escap.
  This book  is a good book eventhough it is not very long but I like this shorty novel like O Herny' novel, short, but we can think more. When I meet what Richard met before, I can use his experience to slove these problems.