Are plots the center of murder mysteries? Or are the characters the center? I think that highly intelligent authors sometimes get carried away and try to do too much. That's the weakness of Blood Work. But if you don't mind a plot from Mars, you may find that the paths of Mars and Venus eventually intersect on Earth.

Blood Work is a novel filled with more imagination than I can ever hope to muster. As a result, the story becomes dizzying in its complications towards the end. What will hold your attention throughout is the riveting portrayal of retired FBI-profiler, Terry McCaleb, as he tries to track down the murderer of the woman whose heart saved McCaleb's life while recovering from the transplant surgery.

To me, the most interesting parts of the book relate to what it would be like to receive a heart transplant and to have a chance to do something for the donor's family by sorting out a murderer. That's about as interesting a premise as you can have. I'm sure you'll think about it often after you read the book.

On the other hand, I was less than thrilled by the shifts in pace within the book. It starts slow and gently . . . but is moving at breakneck pace near the end. The beginning is too slow, and the end is too fast. It's more contrast than most readers can easily absorb.

Michael Connelly also relies a bit too much on his ability to tie an infinite number of facts together into a plot. It's overkill. But I had to be impressed by the imagination that can do that.

If you haven't read other stories by Michael Connelly about Terry McCaleb, be sure you start with this one. It will enrich your appreciation of the later stories.

If you want to have some extra fun with the book, keep track of the different ways that the book's title fits into the story. You'll be amazed at how many different references are appropriate. I don't recall too many novels that use more than three such references. Connelly moves well beyond such a modest target.

Pay attention to the details. They matter!