MERLIN HAS ASKED Jack and Annie to help on another Merlin Mission. This time they head back into history to Venice, Italy. With the help of a research book, a book of magic rhymes, and a set of mysterious instructions from Merlin, the heroes will save the beautiful city from a flood! Here's another Magic Tree House book that will engage kids with history, magic, and nonstop action from beginning to end.From the Hardcover edition.