Renae Brumbaugh 
Camp Club Girls & the Mystery at Discovery Lake [EPUB ebook] 

When six girls from different parts of the country end up as roommates at camp, they also join forces to find out whats really going on beyond the crafts and Bible quizzing. Where are the strange noises coming from? And whats the Dan Ger warning all about? Camp Discovery indeed! The mysteries seem as thick as the woods surrounding the cabins!