This reminds me of the movies The Descent & As Above, So Below combined. If you like either of those you'll definitely love this. I'm claustrophobic so even though stories like these make me a nervous wreck I still love them. The cover is beautiful but I feel like it's missing something. I like that the skull is below the Eiffel Tower showing that the story takes place literally below the ground but I wish it was a little more horror-esq. The Paris Catacombs have always fascinated me so I can't wait to get my hands on this and finish the story to see what happens.