Thea Stilton: Special Edition: The Treasure of the Sea #5
The mouselets and their friend Will Mystery travel to the underwater to search for the magical music. They swim through dangerous waters, reveal an ancient mystery, and find fantastical creatures -- some friendlier than others. An aquatic adventure! Lexile 560, 320 páginas, Tapa Dura, 2x14x20 cms, Geronimo Stilton, 8 a 14 años.