Nancy and her friends save a dog shelter's big day in the thirteenth book in the interactive Nancy Drew Clue Book mystery series. Helga and Horatio are getting married The bride and groom are two fluffy white dogs belonging to one of River Heights's more eccentric citizens, Mrs. Ainsworth. Mayor Strong's mansion is decorated for the occasion, and the whole town is invited. The celebration is an effort to raise awareness for Waggamuffins,...