The D.J. Dillon Adventure Series is a fun adventure mystery series about 13-year-old D.J. Dillon as he gets into mischief with bears and other animals in California's Sierra Nevada Mountains. Featuring the first 5 books in the series: The Hair-Pulling Bear Dog, The City Bear's Adventures, Dooger, The Grasshopper Hound, The Ghost Dog of Stoney Ridge, and Mad Dog of Lobo Mountain. Five softcover books. Recommended for ages 8 to 12 years.