I'm a long-time fan of the Lew Griffin series--some of the books are positively radiant, some get rather bogged down in sentimentality. But Sallis always writes exquisitely; his use of language is never less than beautiful. In order to make any sense at all of Ghost of a Flea, it's important to have read the previous books. Without those frames of reference, this book maunders along. It's a bit like reading in a roomful of candles that flicker if there's even the hint of a breeze. Yet every so often the air is still and the candle flames grow bright and what has been written springs to life, conjuring scenes and characters that are fully three-dimensional. Other times, it's difficult to follow the narrative thread. Past and present intermingle; characters are presented almost in the assumption that the reader is already aware of their context and therefore none is presented--which is why I think it's so important to have read the preceding books before approaching this one. Things happen seemingly at random; there are small mysteries to be solved, but they are secondary to the anthologies, the footnotes of Griffin's thoughts. This book is worth reading for the complex beauty of its language, but does not stand alone without the five companion books to assist in identifying the characters, their histories, and their ultimate impact on the central character. This is not a traditional mystery in any way. But it is very much worth reading for those moments when the light is full and everything suddenly springs to life.