Tunnel of Bones is the second book in the Cassidy Blake series. This time Cassidy’s family is in Paris to film their show about the most haunted cities. Similar to its predecessor, Cassidy and Jacob (her best friend who also happens to be a ghost), run into trouble with the spirits of Paris. I found this title to be entertaining and a great continuation of the first book. Again, this middle-grade series would be a great addition to younger readers’ shelves. I continue to be impressed by Schwab’s writing at all reading levels.