The author of How to Train Your Dragon returns with the final, magical installment of the New York Times bestselling Wizards of Once series!

Xar and Wish are on the final leg of their journey -- first stop: The Mine of Happiness. Here, starvation is never far away for the Magical creatures who toil in its horrible depths. Xar and Wish must escape and fast; Xar needs to take control of his ever-growing Witchstain, and Wish must achieve her Destiny. But the Tazzelwurm is in their way, a grotesque monster who threatens to block every entrance.
Time is not on their side, but the forests are calling them. Will their combined strength be enough for the biggest quest so far: to defeat the Kingwitch once and for all?

Cressida Cowell is the #1 internationally bestselling author and illustrator of The Wizards of Once and the How to Train Your Dragon series. She grew up in London and on a small, uninhabited island off the west coast of Scotland, where she spent her time writing stories, fishing for things to eat, and exploring the island. She now lives in Hammersmith, England, with her husband, three children, and a dog named Pigeon.