At face value this book should be a good adventure/thriller. Along the lines of find treasure, avoid killers, use treasure to save the world (a little bit Indiana Jones). It does start out like this. Husband and wife team Kit and Stella are searching Yorkshire caves for the legend that is the crystal skull - after finding the secret clues in Cedric Owens' diaries. All good so far, Stella finds the skull but shock horror there is someone with them in the cave who will stop at nothing to steal the treasure.
Interweaved with Stella's story is that of Cedric, keeper of the skull during the 1600s. His role is to protect the skull and find where its world saving end will be based. I have to admit that Cedric's adventures in Spain and the New World wore more gripping than Stella's self absorbed tale. However it is the armageddon averting ending that ended the book which was probably the main let down, if you blinked while reading the end you'll miss it - in fact I probably did because by then I'd just lost all interest in what was going on.
This book had all the potential and the writing style wasn't that bad so I just don't know what went wrong. Perhaps its the fact that there are 12 skulls and you just expect more things to happen. Obviously read it if you're a fan of the author as you probably will like it, but if you're looking for a good thriller that will keep you on the edge of your seat reading into the darkness then I'm afraid this isn't it.