Garner's return to Alderley Edge is a complex work, allusive more than explicit, opening multiple possibilities & interpretations, while suggesting that any & all of them could be valid. It's a cerebral book, which certainly got me thinking, but more so is it emotional: heartbreakingly sad, with a tinge of hope.
Colin's struggle with his trauma shifts the perception of the earlier books, adding depth to those already atypical children's stories.