6 books • 4 series
Running Scared (Mysteries in Our National Park) (Mysteries in Our National Parks (Paperback), #11)
Ghost Horses (Mysteries in Our National Park) (Mysteries in Our National Parks (Library), #6)
Cliff-Hanger (Mysteries in Our National Park) (Mysteries in Our National Parks (Library), #3)
Mystery of the Fire in the Sky (Mystery Solvers, #4)
Mystery of the Haunted Silver Mine (Mystery Solvers, #3)
Mystery of the Vanishing Creatures (Mystery Solvers)