One thing Feather knows to be true is that given the chance, the Forest will devour her home just like it's devoured everything else in her world. Her small community lives in a section of the crumbling Wall that runs through and above the trees, doing everything they can to keep the Forest out.

When a stranger tricks Feather and makes off with her people's precious spyglass, she has no choice but to go after him, coming face-to-face with the Forest's dangers--and to revelations beyond her wildest imagination.

In the same stunning format as Island of Whispers, this story about perseverance and community from Costa Book Award winner Frances Hardinge and acclaimed illustrator Emily Gravett is sure to become a new classic.