When they arrive at Nanny Monkton’s, Pixie realises that she’s no ordinary grandma: she lives in a treehouse and wears an eye patch, just like a pirate! As Pixie settles into life in Wendbury and befriends Wyld, she begins to uncover amazing things about her own mother, about Wyld, and the wishing well in Nanny Monkton’s garden – a mystery of mermaids and magical coins. It sends the new friends on a whimsical journey to search for answers, but in Pixie’s heart she knows she wants an answer to the biggest question of all: is there a wish powerful enough to bring her parents back? An unforgettable magical adventure from the author of Jack’s Secret Summer and Jack’s Secret World, beautifully illustrated by Alice McKinley.