Behind the Green Door: A Penny Parker Mystery Story

While visiting a ski resort, Penny finds many mysterious situations. Someone wants the resort closed - but who? And what lies behind the green door, which can only be entered by invitation? Find out the answers to what lies Behind the Green Door!

This book is from the Penny Parker series by Mildred A. Wirt, also known as ghostwriter Carolyn Keene, of the Nancy Drew series of books.