Abby and the Secret Society — Ann M. Martin

America's favorite baby-sitters are detectives, too!

When Abby signs the BSC up to help reopen a country club that's been closed for twenty years, the girls find more than just cobwebs to clear away. There's a decades-old mystery to solve, too: The murder of a reporter who was investigating a secret society, dealing in blackmail and worse, based inside the country club.

Following the reporter's cold trail of clues won't be easy, but that's never stopped the BSC!