All Clear (Connie Willis)

This is the second half of a single novel, published in two parts (the first part was Blackout). It belongs to Willis's time travel universe, which I enjoy a lot. Aside from being much too long, this is another good story in this setting. Three historians go back in time to the London Blitz and become trapped, unable to get back to their present (our future - 2060). The story describes their attempts to find each other, then to figure out what is wrong and how to get out. The backdrop of WWII London is compelling, making "England's finest hour" vivid and underlining the strength and courage of the people who lived through it. There is too much redundancy (too many newspaper clues, too many near misses, too many exploits of the Hodbins), and then the very end is not given quite enough (who exactly is he?), but it is still very much enjoyable.