Good, but far from the "man who loved dogs."

I read many thrillers Leonardo Padura. I like his characters, his moods, his painting of a country where everything is falling apart. With "The Man Who Loved Dogs," "paved" Mixing reality and fiction about Trotsky's assassination, Leonardo entered the courtyard of the "big" because he was out of his usual shell by giving us a very strong work , perfectly documented, rhythmic and catchy. With this "Heretics" I expected new pad again to something stronger. The book remains a novel combining a lot of fiction to some perfectly documented reality is composed of three parts. The first is a sort of introduction to the "polar" and remains in the usual atmosphere of the author. The second takes place in the 17th century in the environment of the painter Rembrandt and Amsterdam Jewish circles. This part seems particularly well documented and painted with such precision that we believe it. This is the third part almost purely police that weakens the book with philosophical considerations not particularly light and at best uninteresting.
These considerations are slowing down, burden the warm style, fraternal and spicy of the author.
I had the unfortunate impression that Leonardo was inspired to write after these 200 additional pages by contract rather than by choice.
If they had produced isolated as one of his thrillers, I would say that it is his worse ...... it said.
I put all the same 4 * much by choice but because I had regretted not being able to put 6 "The man who loved dogs."