I approached this novel with some trepidation - as a huge fan of Susan Howatch's Starbridge series and the three St Benet's novels, I was prepared to be disappointed by the lack of ecclesiastical background that works so well in her more recent work. However, this book had me hooked from start to finish - seeing events from the perspective of different characters was enthralling, and the intricate psychological portrait of each one was deftly woven into the plot. Many times I settled down in bed to read just one chapter ... and found myself struggling to put the book down over two hours later! Finding out at the end that it was loosely based on historical characters was extremely interesting, and made me want to go back and read it all again!
2010 postscript: I am just rereading this novel, and it has struck me this time around what a lot of blasphemy there is in it - which, for a Christian author, is quite surprising. I suppose that Ms Howatch might justify this by claiming that this is how her characters would express themselves, but it still jars if that sort of thing bothers you.