The Washington Post - Michael Dirda
…Blackout is, by turns, witty, suspenseful, harrowing and occasionally comic to the point of slapstick…If you're a science-fiction fan, you'll want to read this book by one of the most honored writers in the field (10 Hugos, six Nebulas); if you're interested in World War II, you should pick up Blackout for its you-are-there authenticity; and if you just like to read, you'll find here a novelist who can plot like Agatha Christie and whose books possess a bounce and stylishness that Preston Sturges might envy.
Excellent! To make it even better - I got this on my Kindle with the Overdrive public library lending system. Just delightful - as a historical novel, it captures WWII England with engaging detail - there are times you don't even think of it as an SF story. Now I have to hang on till I can get the second half "All Clear." Fortunately I found two other books by her that I could borrow AND I have a hardcopy of "Doomsday Book."