Blood and Iron - Elizabeth Bear

A novel of, hmm, let's see...Faerie, the mortal realm, Hell (which only appears in cameo roles), and "dragon princes" (née Arthur).  In spite of this, it's a very readable book, but I don't see how a satisfactory ending could have been expected.  Needless to say I didn't get one.  I don't blame the reference to Arthur, although that would be tempting, since he appears rather less than Hell does and without Hell's ties to the plot.  Still, I enjoyed about 90% of it.