Finished last night:

DEXTER BY DESIGN by Jeff Lindsay, 2009.
This is the fourth of Lindsay's thrillers about Dexter Morgan, the blood spatter analyst who is also a serial killer who hunts down & kills other serial killers. This story involves Dexter in a case of already-dead bodies being mutilated and displayed around Miami in alarming ways; Dexter's cop sister Deborah is stabbed during the investigation; Dexter murders the guy he believes is responsible for the stabbing but is mistaken. Dexter and his family are targeted by the dead man's lover; meanwhile, his sister Deborah has time to mull over certain information about Dexter; and Dexter realizes how close he is to having his true identity revealed by several sources. An interesting plot, snappy dialogue, and good interaction between Dexter and his sister and his wife Rita; however the ending is a little too neat for me. A good read, though, and I still think Dexter is a funny, likable guy.