I bought this book for a second time (it turned out, although I still can't find my original copy but it is allegedly lurking somewhere in the house) and read it after a recommendation from someone on Mastodon but as I read it I remembered how disappointed I'd been the first time.

Fundamentally I think there's an interesting plot idea here but Adams' unravelling of it is confusing and assumes the reader knows as much as he does about Norse mythology and hence he can't be arsed to explain.