Penny, in her role as journalist, covers a society wedding at a strange old estate. But the groom never shows up for the wedding. What happened to him? And there's another man missing as well. Are the disappearances connected? Find out the answer to these mysterious questions in Danger at the Drawbridge 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.