What Nancy hopes will be a mystery-free vacation on the sunny shores of Wisconsin's Lake Minosha turns into another exercise in detective doings, this time concerning a missing environmental report on the future of the lake
After agreeing to help tennis star Nina Ford locate her missing father, Nancy discovers that someone is trying to fix the championship tennis tournament
After submitting her entry to a magazine contest challenging readers to solve a romantic, eighteenth-century Belgian mystery, Nancy is harassed by mysterious phone calls from people demanding to know how she solved her story
When a movie star's daughter disappears from her exclusive all-girls prep school, Nancy goes undercover to find her and, with the help of the missing girl's roommate, spies on a host of suspicious characters, including the school's headmistress