If there is anyone out there that understands the ending of Fire and Hemlock, I'd be very grateful for a detailed explanation. The ending corresponds approximately to Part 4 (Nowhere), Section 6, where
Polly comes to save Tom. Specifically, the part set in the magical swimming pool.
I think I first read that section 20 years ago, but I still don't really know what happens here.
The relevant section starts around the words:
At first sight it seemed to be autumn in the garden.
Fire and Hemlock was, of course, written by the late great Diana Wynne Jones. She is unaccountably missing from this site, so I'm happy to remedy this omission.