What amazing fact about the Tucks is revealed in "Tuck Everlasting"?
In Chapter 7, the Tucks reveal to Winnie that they are immortal because they have drunk water from a spring in the forest that has stopped them from ever aging and dying. 87 years before Winnie met the Tucks, they had been pioneers coming through the woods looking for a place to settle. They stopped and drank from a spring, and soon found out, through a series of accidents, that nothing could kill them. Mae explains to Winnie, "The water -- it stops you right where you are. If you'd had a drink of it today, you'd stay a little girl forever. You'd never grow up, not ever" (Chapter 7). The Tucks are doomed to live forever, which is against the natural order of things. Winnie begins to understand, through her relationship with the Tucks, that immortality can be a sad thing, that the Tucks have to watch as the rest of the world grows and changes, but the Tucks stay stuck.