All Clear

Traveling back in time--from Oxford circa 2060 into the thick of World War II--was a routine excursion for three British historians eager to study firsthand the heroism and horrors of the Dunkirk evacuation and the London Blitz. But getting marooned in war-torn 1940 England has turned the men from temporal tourists into besieged citizens struggling to survive Hitler's devastating onslaught. 656 pp.