The chilling suspense, the fantastic unreal images, and the twisting plot are all flawlessly written. I was a little shell-shocked when it was over. I just sat there, unable to move or blink for a few minutes. I love that unmistakable style of Chesterton's; the philosophical discussions intermingled with the hilarity of a misplaced joke. Mostly I love the characters because I admire their courage so much, and as the story progresses their entire helplessness becomes more and more evident, but they continue on. That's so true of real life.