Another entry in the Psycop chronicles that further develops the personal histories of the two major characters and throws in some new twists about the past.  This entire series is really just turning into one long novel with each book about the equivalent of a very long entry (these are each standard novel size but one).  The positive side is that it can be a BIG story with lots of characters who come and go; the negative side is that it's easy to lose track of characters from the first two books if you lay the series aside for a few weeks (and probably read some other series in the interval).  But I've read all but the last one and will undoubtedly read that as soon as I recover from having read two in succession over a three-day period.  Miss Mattie is a great minor character--hope we find out more about her.