Donna Parker at Cherrydale

It is a youth mystery, the same as Trixie Beldon series or Nancy Drew

Donna and Ricky take jobs as junior counselors at Camp Cherrydale, a summer camp for young children run by Dr and Mrs Duvall. As junior counselors, Donna and Ricky immerse themselves in camp life, enjoying meeting new people, getting to know their young charges, running activities and soaking up the lovely surroundings of the camp. However, camp life is not all fun and games. Donna's senior counselor, Bunny, is acting very strangely, Dr and Mrs Duvall seem to be hiding something, Nancy, a young girl from Summerfield, is causing problems at the camp, and a mysterious house in the nearby woods has Donna and Ricky intrigued.