Bubba and Squirt’s City of Bones is part of a series and is an amusing mystery novel for children. Bubba and his sister Squirt have a magical hole in their backyard that acts as a portal to other places in the world. Their father is missing, and Bubba has a dream about his Great Great Great Grandpa Jacob telling him the answer is in the art in Paris. Bubba and Squirt use the portal to travel to Paris and end up in the catacombs. They meet Jacques, a boy the same age as Bubba, and his cousin Simone.