‘No!’

Polly shouts, and before she realises what is happening, the anger that started deep in her belly has bubbled right up into her chest, through her lungs and up into her head.

Stop! Polly thinks to herself, but it is too late.

Little sparks begin shooting out of her fingertips. She tries to calm herself, but she is too angry, too ferocious, and a jolt like electricity passes from her toes to her head.

and spreads towards the scowling witches below, who are all thrown to the ground.

Polly feels her head grow fuzzy and her body crumples, falling into the darkness below.