A Reunion Story

Upon returning home for his 10-year high school reunion, Sam finds that things haven't changed too much in his old town. The neighbors still tend to their garden and give a friendly hello as he drives down the street, his father leads a quiet life since his mother's passing, and the girl next door is still a frustrating enigma. But then Sam finds a list in an old hiding spot. The author of the list is a mystery, but the items are clearly tasks that Sam needs to accomplish. Who wrote this note, and what will Sam find when he finishes the list?
Minor language may be inappropriate for children under 13.
Leave a review when you're done, if you feel so inclined -- thanks!