The Whispering Skull by Jonathan Stroud (Paperback)

The Whispering Skull is the second book in the Lockwood and Co. series by Jonathan Stroud, author of the Bartimaeus books. In a London plagued by ghosts, a small agency of young investigators takes on dangerous cases, aided by a talking skull with a sharp tongue. Spooky, funny, and full of action, it is a great pick for fans of ghost stories and adventure.