Blackout/All Clear was a pretty good pair of books with some epic events going on. It featured some interesting characters caught in the chaos of WW2 in London and their struggle to return home, or at least get a message out to the future. The plot was tense and chaotic, but with a good, enjoyable payoff when it delivered. And the setting was cool. I wouldn't mind seeing more time travel novels from Connie Willis, but in terms of preference I enjoyed [b:Doomsday Book|24983|Doomsday Book (Oxford Time Travel, #1)|Connie Willis|https://i.gr-assets.com/images/S/compressed.photo.goodreads.com/books/1403972500l/24983.SY75.jpg|2439628] over [b:To Say Nothing of the Dog|77773|To Say Nothing of the Dog (Oxford Time Travel, #2)|Connie Willis|https://i.gr-assets.com/images/S/compressed.photo.goodreads.com/books/1469410460l/77773.SY75.jpg|696] over Blackout/All Clear and would recommend others read them in that order.
For my full review, check out my blog: strakul.blogspot.com/2020/10/book-review-blackout-all-clear-by.html