Nancy's come to Connecticut to visit George's aunt Elizabeth, and she lands right in the middle of a controversy. A bicyclist recently died on a winding country road, and many want to widen it. Others, George's aunt included, propose a bicycle path in order to save a rare species of bat. But the idea has made someone very mad...at Aunt Elizabeth. A threatening phone call, a sinister warning hanging in the doorway, and a sabotaged car convince Nancy that much more than the bats are at stake. But who would go so far as to hurt nice Aunt Elizabeth? Searching for answers proves as twisty and perilous as the winding road itself, and Nancy soon realizes that she may be the one who's endangered!

To be updated