Woola is the first to pick up on it. The hint of the trail that remains. He disappears from Dejah's side in a blur and before she can draw a breath to call out again, he's back, eyes bright.

He's found something!

It's a scrap of rag, frozen stiff with ice, but the tiny length of twine with it is unmistakable.

"This is Edgar's. Woola, show us where you found this!"

Woola chuffs and leads them to a path still visible in the snow, though it's disappearing rapidly. It heads straight for the burned out building.