Despite this being the fourth book in a detective series, it suffered from none of the usual problems of picking up a series in the middle. The characters were fully constructed and likable and there wasn't that persistent, nagging feeling that something was missing. I really enjoyed it! It definitely worked as a standalone mystery, though I will definitely be keeping an eye out for the rest of the series. There was a moment or two when I really hated it... but in the end, I was quite satisfied. The mystery unfolded unpredictably. Very good!