This is one of the best books I have ever read. Kivrin, a time-travelling historian, is mistakenly sent back to a Medieval village near Oxford as the Black Death is about to strike, and sees all around her succumb to the Plague. At the same time, in her home time, a flu pandemic is laying waste to Oxford, stopping any attempts to find her and bring her home. Unlikely as it may sound, this novel also contains some wonderful comic moments - William, Mrs Gaddson, Finch and the American bellringers, to name but a few. I am absolutely caught up in this story and unable to put it down every time I read it.