A mysterious postcard leads Lisa and Nilly from Oslo to Paris in search of Doctor Proctor but, once there, all they find of their missing friend is a time-traveling bathtub powered by a special soap and several sinister individuals determined to do all they can to locate the eccentric inventor.
This book brilliantly weaves together elements of romance, humor, renowned historical settings, unrequited love, bittersweet ending, and more within the pages of a cleverly written children's story. It's truly exceptional.
