In her first novel since 2002, Nebula and Hugo award-winning author Connie Willis returns with a stunning, enormously entertaining novel of time travel, war, and the deeds—great and small—of ordinary people who shape history. In the hands of this acclaimed storyteller, the past and future collide—and the result is at once intriguing, elusive, and frightening. Oxford in 2060 is a chaotic place. Scores of time-traveling historians are being sent into the past, to destinations including the American Civil War and the attack on the World Trade Center. Michael Davies is prepping to go to Pearl Harbor. Merope Ward is coping with a bunch of bratty 1940 evacuees and trying to talk her thesis adviser, Mr. Dunworthy, into letting her go to VE Day. Polly Churchill’s next assignment will be as a shopgirl in the middle of London’s Blitz. And seventeen-year-old Colin Templer, who has a major crush on Polly, is determined to go to the Crusades so that he can “catch up” to her in age.  But now the time-travel lab is suddenly canceling assignments for no apparent reason and switching around everyone’s schedules. And when Michael, Merope, and Polly finally get to World War II, things just get worse. For there they face air raids, blackouts, unexploded bombs, dive-bombing Stukas, rationing, shrapnel, V-1s, and two of the most incorrigible children in all of history—to say nothing of a growing feeling that not only their assignments but the war and history itself are spiraling out of control