Three historians are sent back in time during the Blitz, and nothing happens exactly as it should. The schedules are disrupted from the start, and it may well happen that things that were supposed to be impossible actually happen...

The start is very slow, the main characters are not that distinguishable from one another (the secondary characters are more... colorful, I guess? Or maybe more cliché?), the ending is very abrupt, but I did get the second book right away, because I definitely want to know what happens next.