Open the envelopes inside this book and find letters from all your favourite Moomin characters, including postcards from Moominpappa, a little book from Little My, a pancake recipe from Moominmamma - and more!

"Moomintroll's best friend Snufkin has left Moomintroll a special surprise in the letterbox - a treasure hunt! Follow Moomintroll as he explores Moominvalley and finds all the clues Snufkin has left, leading to an exciting surprise. A treat for Moomin fans old and new, this beautifully-illustrated picture book is sure to be treasured for years to come.