Summary: #1 New York Times bestselling author Victoria Schwab returns to the spooky, thrilling world of City of Ghosts. Fresh off their first adventure in Edinburgh, Cass and her ghostly best friend, Jacob, (plus her black cat, Grim) head to Paris for the Inspecters' next ghost-hunting installment. There, they tour the creepy catacombs and learn about spooky stories of ghosts at the Eiffel Tower. But the real threat comes from a young Parisian poltergeist who causes all sorts of trouble. And what will Cass dowith her power to cross the Veil now that she knows what her true purpose is?