Twister by Juliette Forrest (author) (UK edition)

“If you only read one children’s book this summer… make it this one”The Guardian
A brave, bright girl embarks on a heart-racing adventure to find her missing father – with magic and danger quite literally in the air…
Twister’s beloved father has gone missing and as she’s searching for him she stumbles across a witch living in the woods.
She is given a magical necklace that holds the souls of living things and can turn the wearer into a wolf, or a rushing river, or a rainstorm.
But there’s a dark foe on the hunt for this necklace, a baddie who wears a coat crawling with creatures and who might have something to do with her father’s sudden disappearance…