It is a fast paced vampire adventure novel filled with non-stop action scenes. The concept of a Jack the Ripper II in a year 1999 London is quite refreshing. Plus those blood crazed vampire villains are exciting too! Last but not least, I also like how the hacker girl and the vampire hunter *stay friends* in the story, instead of the young girl having a crush on the hunter, or any other stupid thing of that sort.