I liked this book more for gaining an understanding of Tourette's syndrome than as a mystery novel. Reviews from the medical community that I read praised Lethem's accurate description of living with Tourettes, although this is not a warm, fuzzy novel. Instead, Lionel Essrog is trying to discover the murderer of his legally and the ethically questionable boss -- the mob is clearly involved. But Essrog is bright and his Tourettes makes some people he is not, so he gets further than other people may in the same situation. The plot itself is too vague to follow and at times you feel the narrator knows more than he is telling, but why information is held back is not clear. Will not give away detail -- I'll just say it is worth reading.