With The City, Darren Shan seems to have filled a very particular niche. This is a dark series but well done, equal parts mystery and horror, casting a host of villains and really no traditional "pure and uncontaminated" heroes. While plenty of horror stories exist that deal with a nexus of pure evil, Shan's is unique for leaning toward the fantastical and somehow not becoming corny. It would seem overly misleading to call it a dark urban fantasy because it is quite dark --- much more than readers might expect from a novel traditionally placed in that genre.
Building on the story Shan has already meticulously laid out, CITY OF THE SNAKES jumps forward a few years, after the Cardinal Capac Rai