The umbrella mystery (e-Book)

Danni's grandfather disappeared without a trace during a visit to Japan. No one has heard from him for forty years. Until Danni receives a Japanese umbrella from her grandmother. This and a letter are the only clues grandpa left. Is it enough to find him? Together with her friend Kiko, she unravels the sinister secret of the miracle umbrella, for which she has to pay a great price.