This is an interesting view of life in France immediately after the Nazi occupation in 1940. The protagonist, Jean Casson, a film producer, is drawn into some espionage and counter-espionage activities. The appealing thing about Casson is that he is definitely not heroic; he's just trying to get by, but he also feels tht he can't just roll over and collaborate with the Nazis.
Furst is described as a spy novelist, but I think that label doesn't really apply in this case.
The book is good enough to make me want to read more. I've checked out the sequel to this novel, "Red Gold", to see what happens next.