"Whispering Walls" by Mildred A. Wirth is a fascinating book that tells the story of mysterious events that unfold in an old castle on top of a rocky mountain in southeastern France. The main character, a young girl named Lucy, accidentally falls into this mysterious and confusing situation, where every whisper on the walls can hide important answers. Together with her new friends, Lucy decides to uncover a secret hidden within the walls of the castle that could change the nature of their world forever. "Whispering Walls" is an exciting book about friendship, adventure and belief in miracles, which will keep readers on their toes until the very last word.