The Great Mysterious Adventure

Jan and Denetria, imaginative 10 year olds, love to collect stuffed animals and read books. Denetria loves mysteries and Jan loves adventures! Rumors are rampant at school about strange noises in Golden Gate Park. Further than they're allowed to bike, they decide to go on their own Great Mysterious Adventure! They soon discover a clever mystery in the diversity of life! How will they get anyone to believe them?