Toby and Belle, BFF, never forgot that day, and ever after called it "The day everything changed." Because of a family crisis, the friends dreaded this might be the very last summer they would ever spend together. Trying to shake off and forget their gloom, they decided to find comfort in hiking one of their favorite trails. Then things changed. On the trail where they found the tiny Key, gritty with age, they had no idea it was exceptional in any...