I am a big Willis fan and this is her first new book in years and years! 
 Another tale of time-traveling historians from the Oxford of 2060, this book is about a number of historians researching the England of WWII, thrown off-kilter by unexplained disarray in the time travel department, and ultimately getting trapped in the 1940s. One is sent to observe child evacuees, and ends up caring for the incorrigible Alf and Binnie--and may thereby have inadvertently changed history. Another goes to interview heroes coming back from Dunkirk--but ends up in Dunkirk and may thereby have inadvertently changed history. And a third gets caught up in the Blitz, where the bombings and casualty lists seem just a little off from what they were when she learned them... this book is really, really awesome but it ends on a cliffhanger. Luckily, _All Clear_ is due out really soon, as opposed to, say, 8 years from now.