Sydney and the Wisconsin whispering woods

"Sydney and Alexis are getting back to nature at a lake in northern Wisconsin. During their stay, mysterious occurrences catch the super sleuths' attention. Mysterious whispers in the woods-- An eerie purple glow-- Local lore of a missing fur trapper-- A shadowy figure in the night-- Is there a wild animal on the loose? Or is it something even more menacing? The Camp Club Girls are determined to solve this mystery before their time in the forest is up!"--P. [4] of cover.