Travelling Backwards

Lizzie is upset. Her grandfather is very ill and she realises that he will soon die. She begs her friend Mrs May to give her something to make him better. Mrs May gives her a potion with the warning that Grandfather must not drink too much. The effect is startling. Grandfather becomes much younger and more vigorous with each sip. Of course, he pays no heed to Mrs May's warning until the process of getting younger becomes a little too extreme! He and Lizzie are faced with the dilemma: is this really how life should end?