Once again, Stephen King refuses to be pigeonholed in a genre category. In the last few years, he's written a long epic with a large cast of characters (Under the Dome), a time-travel love story (11/22/63), a new Dark Tower novel, a creature-filled sequel to the Shining, and coming of age mystery story (Joyland), and now a detective-based thriller. This book does not have any supernatural elements, though some of the descriptions of gore are classic King writing.
The characters are mostly fully fleshed out, with the unfortunate exception of one female character who I felt had a lot of quirks, but didn't feel completely real. Hopefully King will work on that character in the next book of this planned trilogy, due out next year. I'm interested to see where King takes this series. With a few exceptions, he doesn't write a lot of sequels.
The plotting and pacing of this book is excellent. King seems to set it up one way, then constantly pulls the rug out from under the reader. I loved the journey, though the ending felt a little limited, with one character getting sidelined before the big finale. I don't think this is a 5 star book, mainly because it feels too much like a standard thriller (a really well done one, but nothing that will make me forget about King's other stellar work). I highly recommend it to all fans of Stephen King and/or detective thrillers.