<p>Caroline witnesses the agonizing death of her twin brother, when they are no more than 15 years old. Horrified, she feels that nobody should ever have to die.</p><p>Then she discovers a hidden visitor to her home, who has the ability to live forever without aging at all. And this ability can be transmitted.</p><p>As she gets to know the visitor, she finds that there are grisly downsides to such longevity. But events unfold, giving her little time to decide.</p><p>Stefan Stenudd is a Swedish author, historian of ideas, and instructor in the peaceful martial art aikido. He writes because he just has to.</p>