SHAKEN is the second-to-last entry in the Jacqueline “Jack” Daniels series. And it shows that author J.A. Konrath has left the trademark humor for gore and one long setup to the final book.
The gimmick here is nothing new and has been done in countless other books: telling the story in three separate timelines. He goes back to Daniels’ early days on the force in 1989, tracking down a killer of prostitutes, while the second story line takes us to 2007, where they have been hunting a serial killer by the name of Mr. K. The sadistic Mr. K taunts the police to the point of giving them all the clues to take him in.