Harry glanced up and saw his twin brother lean over and grab the branch.

Then he saw him freeze.

Jordan was stuck. His hands gripped the branch, but his feet were hooked through the armrest of the sky-chair. The rest of him stretched across the open space in between, like a human hammock.

‘Let go with your feet!’ Harry said.

But Jordan wasn’t thinking about his feet. He wasn’t thinking about his hands, either. There was something in the tree in front of him – something amazing …