Just finished A Bloody Storm, the last of the the three Castle/ Derrick Storm books. It's really one book in three parts. Each picks up exactly where the last leaves off, some things resolved, but most a cliffhanger.
They were enjoyable. And not just because I imagine them being read by Nathan Fillion.
The first installment is strictly limited to Storm's viewpoint. The second has a much wider point of view, and the third narrows back in. This made the second book a little jarring. It also increased my distrust of one of the characters simply because we never saw their point of view on anything. I really expected that character to be the big villain, but it didn't turn out that way.
Liked the books - would recommend them, especially to fans of the tv show.